diff --git a/include/android/asset_manager.h b/include/android/asset_manager.h
index f5df46b..d654839 100644
--- a/include/android/asset_manager.h
+++ b/include/android/asset_manager.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Asset
+ * @{
+ */
+
+/**
+ * @file asset_manager.h
+ */
 
 #ifndef ANDROID_ASSET_MANAGER_H
 #define ANDROID_ASSET_MANAGER_H
@@ -23,19 +31,49 @@
 #endif
 
 struct AAssetManager;
+/**
+ * {@link AAssetManager} provides access to an application's raw assets by
+ * creating {@link AAsset} objects.
+ *
+ * AAssetManager is a wrapper to the low-level native implementation
+ * of the java {@link AAssetManager}, a pointer can be obtained using
+ * AAssetManager_fromJava().
+ *
+ * The asset hierarchy may be examined like a filesystem, using
+ * {@link AAssetDir} objects to peruse a single directory.
+ *
+ * A native {@link AAssetManager} pointer may be shared across multiple threads.
+ */
 typedef struct AAssetManager AAssetManager;
 
 struct AAssetDir;
+/**
+ * {@link AAssetDir} provides access to a chunk of the asset hierarchy as if
+ * it were a single directory. The contents are populated by the
+ * {@link AAssetManager}.
+ *
+ * The list of files will be sorted in ascending order by ASCII value.
+ */
 typedef struct AAssetDir AAssetDir;
 
 struct AAsset;
+/**
+ * {@link AAsset} provides access to a read-only asset.
+ *
+ * {@link AAsset} objects are NOT thread-safe, and should not be shared across
+ * threads.
+ */
 typedef struct AAsset AAsset;
 
-/* Available modes for opening assets */
+/** Available access modes for opening assets with {@link AAssetManager_open} */
 enum {
+    /** No specific information about how data will be accessed. **/
     AASSET_MODE_UNKNOWN      = 0,
+    /** Read chunks, and seek forward and backward. */
     AASSET_MODE_RANDOM       = 1,
+    /** Read sequentially, with an occasional forward seek. */
     AASSET_MODE_STREAMING    = 2,
+    /** Caller plans to ask for a read-only buffer with all data. */
     AASSET_MODE_BUFFER       = 3
 };
 
@@ -173,3 +211,5 @@
 #endif
 
 #endif      // ANDROID_ASSET_MANAGER_H
+
+/** @} */
diff --git a/include/android/asset_manager_jni.h b/include/android/asset_manager_jni.h
index aec2d3c..dcee17e 100644
--- a/include/android/asset_manager_jni.h
+++ b/include/android/asset_manager_jni.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Asset
+ * @{
+ */
+
+/**
+ * @file asset_manager_jni.h
+ */
 
 #ifndef ANDROID_ASSET_MANAGER_JNI_H
 #define ANDROID_ASSET_MANAGER_JNI_H
@@ -38,3 +46,5 @@
 #endif
 
 #endif      // ANDROID_ASSET_MANAGER_JNI_H
+
+/** @} */
diff --git a/include/android/bitmap.h b/include/android/bitmap.h
index 6e18763..261e64f 100644
--- a/include/android/bitmap.h
+++ b/include/android/bitmap.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Bitmap
+ * @{
+ */
+
+/**
+ * @file bitmap.h
+ */
+
 #ifndef ANDROID_BITMAP_H
 #define ANDROID_BITMAP_H
 
@@ -24,33 +33,52 @@
 extern "C" {
 #endif
 
-#define ANDROID_BITMAP_RESULT_SUCCESS            0
-#define ANDROID_BITMAP_RESULT_BAD_PARAMETER     -1
-#define ANDROID_BITMAP_RESULT_JNI_EXCEPTION     -2
-#define ANDROID_BITMAP_RESULT_ALLOCATION_FAILED -3
+/** AndroidBitmap functions result code. */
+enum {
+    /** Operation was successful. */
+    ANDROID_BITMAP_RESULT_SUCCESS           = 0,
+    /** Bad parameter. */
+    ANDROID_BITMAP_RESULT_BAD_PARAMETER     = -1,
+    /** JNI exception occured. */
+    ANDROID_BITMAP_RESULT_JNI_EXCEPTION     = -2,
+    /** Allocation failed. */
+    ANDROID_BITMAP_RESULT_ALLOCATION_FAILED = -3,
+};
 
-/* Backward compatibility: this macro used to be misspelled. */
+/** Backward compatibility: this macro used to be misspelled. */
 #define ANDROID_BITMAP_RESUT_SUCCESS ANDROID_BITMAP_RESULT_SUCCESS
 
+/** Bitmap pixel format. */
 enum AndroidBitmapFormat {
+    /** No format. */
     ANDROID_BITMAP_FORMAT_NONE      = 0,
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Alpha: 8 bits. **/
     ANDROID_BITMAP_FORMAT_RGBA_8888 = 1,
+    /** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
     ANDROID_BITMAP_FORMAT_RGB_565   = 4,
+    /** Red: 4 bits, Green: 4 bits, Blue: 4 bits, Alpha: 4 bits. **/
     ANDROID_BITMAP_FORMAT_RGBA_4444 = 7,
+    /** Deprecated. */
     ANDROID_BITMAP_FORMAT_A_8       = 8,
 };
 
+/** Bitmap info, see AndroidBitmap_getInfo(). */
 typedef struct {
+    /** The bitmap width in pixels. */
     uint32_t    width;
+    /** The bitmap height in pixels. */
     uint32_t    height;
+    /** The number of byte per row. */
     uint32_t    stride;
+    /** The bitmap pixel format. See {@link AndroidBitmapFormat} */
     int32_t     format;
+    /** Unused. */
     uint32_t    flags;      // 0 for now
 } AndroidBitmapInfo;
 
 /**
- * Given a java bitmap object, fill out the AndroidBitmap struct for it.
- * If the call fails, the info parameter will be ignored
+ * Given a java bitmap object, fill out the AndroidBitmapInfo struct for it.
+ * If the call fails, the info parameter will be ignored.
  */
 int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap,
                           AndroidBitmapInfo* info);
@@ -71,7 +99,7 @@
 int AndroidBitmap_lockPixels(JNIEnv* env, jobject jbitmap, void** addrPtr);
 
 /**
- * Call this to balanace a successful call to AndroidBitmap_lockPixels
+ * Call this to balance a successful call to AndroidBitmap_lockPixels.
  */
 int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap);
 
@@ -80,3 +108,5 @@
 #endif
 
 #endif
+
+/** @} */
diff --git a/include/android/configuration.h b/include/android/configuration.h
index be00066..287865e 100644
--- a/include/android/configuration.h
+++ b/include/android/configuration.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Configuration
+ * @{
+ */
+
+/**
+ * @file configuration.h
+ */
+
 #ifndef ANDROID_CONFIGURATION_H
 #define ANDROID_CONFIGURATION_H
 
@@ -24,98 +33,395 @@
 #endif
 
 struct AConfiguration;
+/**
+ * {@link AConfiguration} is an opaque type used to get and set
+ * various subsystem configurations.
+ *
+ * A {@link AConfiguration} pointer can be obtained using:
+ * - AConfiguration_new()
+ * - AConfiguration_fromAssetManager()
+ */
 typedef struct AConfiguration AConfiguration;
 
+
+/**
+ * Define flags and constants for various subsystem configurations.
+ */
 enum {
+    /** Orientation: not specified. */
     ACONFIGURATION_ORIENTATION_ANY  = 0x0000,
+    /**
+     * Orientation: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#OrientationQualifier">port</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_ORIENTATION_PORT = 0x0001,
+    /**
+     * Orientation: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#OrientationQualifier">land</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_ORIENTATION_LAND = 0x0002,
+    /** @deprecated Not currently supported or used. */
     ACONFIGURATION_ORIENTATION_SQUARE = 0x0003,
 
+    /** Touchscreen: not specified. */
     ACONFIGURATION_TOUCHSCREEN_ANY  = 0x0000,
+    /**
+     * Touchscreen: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#TouchscreenQualifier">notouch</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_TOUCHSCREEN_NOTOUCH  = 0x0001,
+    /** @deprecated Not currently supported or used. */
     ACONFIGURATION_TOUCHSCREEN_STYLUS  = 0x0002,
+    /**
+     * Touchscreen: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#TouchscreenQualifier">finger</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_TOUCHSCREEN_FINGER  = 0x0003,
 
+    /** Density: default density. */
     ACONFIGURATION_DENSITY_DEFAULT = 0,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">ldpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_LOW = 120,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">mdpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_MEDIUM = 160,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">tvdpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_TV = 213,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">hdpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_HIGH = 240,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">xhdpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_XHIGH = 320,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">xxhdpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_XXHIGH = 480,
+    /**
+     * Density: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">xxxhdpi</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_DENSITY_XXXHIGH = 640,
+    /** Density: any density. */
     ACONFIGURATION_DENSITY_ANY = 0xfffe,
+    /** Density: no density specified. */
     ACONFIGURATION_DENSITY_NONE = 0xffff,
 
+    /** Keyboard: not specified. */
     ACONFIGURATION_KEYBOARD_ANY  = 0x0000,
+    /**
+     * Keyboard: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ImeQualifier">nokeys</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_KEYBOARD_NOKEYS  = 0x0001,
+    /**
+     * Keyboard: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ImeQualifier">qwerty</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_KEYBOARD_QWERTY  = 0x0002,
+    /**
+     * Keyboard: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ImeQualifier">12key</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_KEYBOARD_12KEY  = 0x0003,
 
+    /** Navigation: not specified. */
     ACONFIGURATION_NAVIGATION_ANY  = 0x0000,
+    /**
+     * Navigation: value corresponding to the
+     * <a href="@@dacRoot/guide/topics/resources/providing-resources.html#NavigationQualifier">nonav</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_NAVIGATION_NONAV  = 0x0001,
+    /**
+     * Navigation: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NavigationQualifier">dpad</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_NAVIGATION_DPAD  = 0x0002,
+    /**
+     * Navigation: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NavigationQualifier">trackball</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_NAVIGATION_TRACKBALL  = 0x0003,
+    /**
+     * Navigation: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NavigationQualifier">wheel</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_NAVIGATION_WHEEL  = 0x0004,
 
+    /** Keyboard availability: not specified. */
     ACONFIGURATION_KEYSHIDDEN_ANY = 0x0000,
+    /**
+     * Keyboard availability: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keysexposed</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_KEYSHIDDEN_NO = 0x0001,
+    /**
+     * Keyboard availability: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keyshidden</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_KEYSHIDDEN_YES = 0x0002,
+    /**
+     * Keyboard availability: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keyssoft</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_KEYSHIDDEN_SOFT = 0x0003,
 
+    /** Navigation availability: not specified. */
     ACONFIGURATION_NAVHIDDEN_ANY = 0x0000,
+    /**
+     * Navigation availability: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NavAvailQualifier">navexposed</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_NAVHIDDEN_NO = 0x0001,
+    /**
+     * Navigation availability: value corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NavAvailQualifier">navhidden</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_NAVHIDDEN_YES = 0x0002,
 
+    /** Screen size: not specified. */
     ACONFIGURATION_SCREENSIZE_ANY  = 0x00,
+    /**
+     * Screen size: value indicating the screen is at least
+     * approximately 320x426 dp units, corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenSizeQualifier">small</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_SCREENSIZE_SMALL = 0x01,
+    /**
+     * Screen size: value indicating the screen is at least
+     * approximately 320x470 dp units, corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenSizeQualifier">normal</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_SCREENSIZE_NORMAL = 0x02,
+    /**
+     * Screen size: value indicating the screen is at least
+     * approximately 480x640 dp units, corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenSizeQualifier">large</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_SCREENSIZE_LARGE = 0x03,
+    /**
+     * Screen size: value indicating the screen is at least
+     * approximately 720x960 dp units, corresponding to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenSizeQualifier">xlarge</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_SCREENSIZE_XLARGE = 0x04,
 
+    /** Screen layout: not specified. */
     ACONFIGURATION_SCREENLONG_ANY = 0x00,
+    /**
+     * Screen layout: value that corresponds to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenAspectQualifier">notlong</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_SCREENLONG_NO = 0x1,
+    /**
+     * Screen layout: value that corresponds to the
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenAspectQualifier">long</a>
+     * resource qualifier.
+     */
     ACONFIGURATION_SCREENLONG_YES = 0x2,
 
+    /** UI mode: not specified. */
     ACONFIGURATION_UI_MODE_TYPE_ANY = 0x00,
+    /**
+     * UI mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">no
+     * UI mode type</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_TYPE_NORMAL = 0x01,
+    /**
+     * UI mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">desk</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_TYPE_DESK = 0x02,
+    /**
+     * UI mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">car</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_TYPE_CAR = 0x03,
+    /**
+     * UI mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">television</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_TYPE_TELEVISION = 0x04,
+    /**
+     * UI mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">appliance</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_TYPE_APPLIANCE = 0x05,
+    /**
+     * UI mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">watch</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_TYPE_WATCH = 0x06,
 
+    /** UI night mode: not specified.*/
     ACONFIGURATION_UI_MODE_NIGHT_ANY = 0x00,
+    /**
+     * UI night mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NightQualifier">notnight</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_NIGHT_NO = 0x1,
+    /**
+     * UI night mode: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NightQualifier">night</a> resource qualifier specified.
+     */
     ACONFIGURATION_UI_MODE_NIGHT_YES = 0x2,
 
+    /** Screen width DPI: not specified. */
     ACONFIGURATION_SCREEN_WIDTH_DP_ANY = 0x0000,
 
+    /** Screen height DPI: not specified. */
     ACONFIGURATION_SCREEN_HEIGHT_DP_ANY = 0x0000,
 
+    /** Smallest screen width DPI: not specified.*/
     ACONFIGURATION_SMALLEST_SCREEN_WIDTH_DP_ANY = 0x0000,
 
+    /** Layout direction: not specified. */
     ACONFIGURATION_LAYOUTDIR_ANY  = 0x00,
+    /**
+     * Layout direction: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#LayoutDirectionQualifier">ldltr</a> resource qualifier specified.
+     */
     ACONFIGURATION_LAYOUTDIR_LTR  = 0x01,
+    /**
+     * Layout direction: value that corresponds to
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#LayoutDirectionQualifier">ldrtl</a> resource qualifier specified.
+     */
     ACONFIGURATION_LAYOUTDIR_RTL  = 0x02,
 
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#MccQualifier">mcc</a>
+     * configuration.
+     */
     ACONFIGURATION_MCC = 0x0001,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#MccQualifier">mnc</a>
+     * configuration.
+     */
     ACONFIGURATION_MNC = 0x0002,
+    /**
+     * Bit mask for
+     * <a href="{@docRoot}guide/topics/resources/providing-resources.html#LocaleQualifier">locale</a>
+     * configuration.
+     */
     ACONFIGURATION_LOCALE = 0x0004,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#TouchscreenQualifier">touchscreen</a>
+     * configuration.
+     */
     ACONFIGURATION_TOUCHSCREEN = 0x0008,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ImeQualifier">keyboard</a>
+     * configuration.
+     */
     ACONFIGURATION_KEYBOARD = 0x0010,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keyboardHidden</a>
+     * configuration.
+     */
     ACONFIGURATION_KEYBOARD_HIDDEN = 0x0020,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#NavigationQualifier">navigation</a>
+     * configuration.
+     */
     ACONFIGURATION_NAVIGATION = 0x0040,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#OrientationQualifier">orientation</a>
+     * configuration.
+     */
     ACONFIGURATION_ORIENTATION = 0x0080,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#DensityQualifier">density</a>
+     * configuration.
+     */
     ACONFIGURATION_DENSITY = 0x0100,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#ScreenSizeQualifier">screen size</a>
+     * configuration.
+     */
     ACONFIGURATION_SCREEN_SIZE = 0x0200,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#VersionQualifier">platform version</a>
+     * configuration.
+     */
     ACONFIGURATION_VERSION = 0x0400,
+    /**
+     * Bit mask for screen layout configuration.
+     */
     ACONFIGURATION_SCREEN_LAYOUT = 0x0800,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#UiModeQualifier">ui mode</a>
+     * configuration.
+     */
     ACONFIGURATION_UI_MODE = 0x1000,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#SmallestScreenWidthQualifier">smallest screen width</a>
+     * configuration.
+     */
     ACONFIGURATION_SMALLEST_SCREEN_SIZE = 0x2000,
+    /**
+     * Bit mask for
+     * <a href="@dacRoot/guide/topics/resources/providing-resources.html#LayoutDirectionQualifier">layout direction</a>
+     * configuration.
+     */
     ACONFIGURATION_LAYOUTDIR = 0x4000,
-
+    /**
+     * Constant used to to represent MNC (Mobile Network Code) zero.
+     * 0 cannot be used, since it is used to represent an undefined MNC.
+     */
     ACONFIGURATION_MNC_ZERO = 0xffff,
 };
 
@@ -132,7 +438,7 @@
 
 /**
  * Create and return a new AConfiguration based on the current configuration in
- * use in the given AssetManager.
+ * use in the given {@link AAssetManager}.
  */
 void AConfiguration_fromAssetManager(AConfiguration* out, AAssetManager* am);
 
@@ -383,3 +689,5 @@
 #endif
 
 #endif // ANDROID_CONFIGURATION_H
+
+/** @} */
diff --git a/include/android/input.h b/include/android/input.h
index a660761..b11af84 100644
--- a/include/android/input.h
+++ b/include/android/input.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Input
+ * @{
+ */
+
+/**
+ * @file input.h
+ */
+
 #ifndef _ANDROID_INPUT_H
 #define _ANDROID_INPUT_H
 
@@ -49,247 +58,271 @@
 extern "C" {
 #endif
 
-/*
+/**
  * Key states (may be returned by queries about the current state of a
  * particular key code, scan code or switch).
  */
 enum {
-    /* The key state is unknown or the requested key itself is not supported. */
+    /** The key state is unknown or the requested key itself is not supported. */
     AKEY_STATE_UNKNOWN = -1,
 
-    /* The key is up. */
+    /** The key is up. */
     AKEY_STATE_UP = 0,
 
-    /* The key is down. */
+    /** The key is down. */
     AKEY_STATE_DOWN = 1,
 
-    /* The key is down but is a virtual key press that is being emulated by the system. */
+    /** The key is down but is a virtual key press that is being emulated by the system. */
     AKEY_STATE_VIRTUAL = 2
 };
 
-/*
+/**
  * Meta key / modifer state.
  */
 enum {
-    /* No meta keys are pressed. */
+    /** No meta keys are pressed. */
     AMETA_NONE = 0,
 
-    /* This mask is used to check whether one of the ALT meta keys is pressed. */
+    /** This mask is used to check whether one of the ALT meta keys is pressed. */
     AMETA_ALT_ON = 0x02,
 
-    /* This mask is used to check whether the left ALT meta key is pressed. */
+    /** This mask is used to check whether the left ALT meta key is pressed. */
     AMETA_ALT_LEFT_ON = 0x10,
 
-    /* This mask is used to check whether the right ALT meta key is pressed. */
+    /** This mask is used to check whether the right ALT meta key is pressed. */
     AMETA_ALT_RIGHT_ON = 0x20,
 
-    /* This mask is used to check whether one of the SHIFT meta keys is pressed. */
+    /** This mask is used to check whether one of the SHIFT meta keys is pressed. */
     AMETA_SHIFT_ON = 0x01,
 
-    /* This mask is used to check whether the left SHIFT meta key is pressed. */
+    /** This mask is used to check whether the left SHIFT meta key is pressed. */
     AMETA_SHIFT_LEFT_ON = 0x40,
 
-    /* This mask is used to check whether the right SHIFT meta key is pressed. */
+    /** This mask is used to check whether the right SHIFT meta key is pressed. */
     AMETA_SHIFT_RIGHT_ON = 0x80,
 
-    /* This mask is used to check whether the SYM meta key is pressed. */
+    /** This mask is used to check whether the SYM meta key is pressed. */
     AMETA_SYM_ON = 0x04,
 
-    /* This mask is used to check whether the FUNCTION meta key is pressed. */
+    /** This mask is used to check whether the FUNCTION meta key is pressed. */
     AMETA_FUNCTION_ON = 0x08,
 
-    /* This mask is used to check whether one of the CTRL meta keys is pressed. */
+    /** This mask is used to check whether one of the CTRL meta keys is pressed. */
     AMETA_CTRL_ON = 0x1000,
 
-    /* This mask is used to check whether the left CTRL meta key is pressed. */
+    /** This mask is used to check whether the left CTRL meta key is pressed. */
     AMETA_CTRL_LEFT_ON = 0x2000,
 
-    /* This mask is used to check whether the right CTRL meta key is pressed. */
+    /** This mask is used to check whether the right CTRL meta key is pressed. */
     AMETA_CTRL_RIGHT_ON = 0x4000,
 
-    /* This mask is used to check whether one of the META meta keys is pressed. */
+    /** This mask is used to check whether one of the META meta keys is pressed. */
     AMETA_META_ON = 0x10000,
 
-    /* This mask is used to check whether the left META meta key is pressed. */
+    /** This mask is used to check whether the left META meta key is pressed. */
     AMETA_META_LEFT_ON = 0x20000,
 
-    /* This mask is used to check whether the right META meta key is pressed. */
+    /** This mask is used to check whether the right META meta key is pressed. */
     AMETA_META_RIGHT_ON = 0x40000,
 
-    /* This mask is used to check whether the CAPS LOCK meta key is on. */
+    /** This mask is used to check whether the CAPS LOCK meta key is on. */
     AMETA_CAPS_LOCK_ON = 0x100000,
 
-    /* This mask is used to check whether the NUM LOCK meta key is on. */
+    /** This mask is used to check whether the NUM LOCK meta key is on. */
     AMETA_NUM_LOCK_ON = 0x200000,
 
-    /* This mask is used to check whether the SCROLL LOCK meta key is on. */
+    /** This mask is used to check whether the SCROLL LOCK meta key is on. */
     AMETA_SCROLL_LOCK_ON = 0x400000,
 };
 
-/*
+struct AInputEvent;
+/**
  * Input events.
  *
  * Input events are opaque structures.  Use the provided accessors functions to
  * read their properties.
  */
-struct AInputEvent;
 typedef struct AInputEvent AInputEvent;
 
-/*
+/**
  * Input event types.
  */
 enum {
-    /* Indicates that the input event is a key event. */
+    /** Indicates that the input event is a key event. */
     AINPUT_EVENT_TYPE_KEY = 1,
 
-    /* Indicates that the input event is a motion event. */
+    /** Indicates that the input event is a motion event. */
     AINPUT_EVENT_TYPE_MOTION = 2
 };
 
-/*
+/**
  * Key event actions.
  */
 enum {
-    /* The key has been pressed down. */
+    /** The key has been pressed down. */
     AKEY_EVENT_ACTION_DOWN = 0,
 
-    /* The key has been released. */
+    /** The key has been released. */
     AKEY_EVENT_ACTION_UP = 1,
 
-    /* Multiple duplicate key events have occurred in a row, or a complex string is
-     * being delivered.  The repeat_count property of the key event contains the number
-     * of times the given key code should be executed.
+    /**
+     * Multiple duplicate key events have occurred in a row, or a
+     * complex string is being delivered.  The repeat_count property
+     * of the key event contains the number of times the given key
+     * code should be executed.
      */
     AKEY_EVENT_ACTION_MULTIPLE = 2
 };
 
-/*
+/**
  * Key event flags.
  */
 enum {
-    /* This mask is set if the device woke because of this key event. */
+    /** This mask is set if the device woke because of this key event. */
     AKEY_EVENT_FLAG_WOKE_HERE = 0x1,
 
-    /* This mask is set if the key event was generated by a software keyboard. */
+    /** This mask is set if the key event was generated by a software keyboard. */
     AKEY_EVENT_FLAG_SOFT_KEYBOARD = 0x2,
 
-    /* This mask is set if we don't want the key event to cause us to leave touch mode. */
+    /** This mask is set if we don't want the key event to cause us to leave touch mode. */
     AKEY_EVENT_FLAG_KEEP_TOUCH_MODE = 0x4,
 
-    /* This mask is set if an event was known to come from a trusted part
-     * of the system.  That is, the event is known to come from the user,
-     * and could not have been spoofed by a third party component. */
+    /**
+     * This mask is set if an event was known to come from a trusted
+     * part of the system.  That is, the event is known to come from
+     * the user, and could not have been spoofed by a third party
+     * component.
+     */
     AKEY_EVENT_FLAG_FROM_SYSTEM = 0x8,
 
-    /* This mask is used for compatibility, to identify enter keys that are
+    /**
+     * This mask is used for compatibility, to identify enter keys that are
      * coming from an IME whose enter key has been auto-labelled "next" or
      * "done".  This allows TextView to dispatch these as normal enter keys
      * for old applications, but still do the appropriate action when
-     * receiving them. */
+     * receiving them.
+     */
     AKEY_EVENT_FLAG_EDITOR_ACTION = 0x10,
 
-    /* When associated with up key events, this indicates that the key press
+    /**
+     * When associated with up key events, this indicates that the key press
      * has been canceled.  Typically this is used with virtual touch screen
      * keys, where the user can slide from the virtual key area on to the
      * display: in that case, the application will receive a canceled up
      * event and should not perform the action normally associated with the
      * key.  Note that for this to work, the application can not perform an
      * action for a key until it receives an up or the long press timeout has
-     * expired. */
+     * expired.
+     */
     AKEY_EVENT_FLAG_CANCELED = 0x20,
 
-    /* This key event was generated by a virtual (on-screen) hard key area.
+    /**
+     * This key event was generated by a virtual (on-screen) hard key area.
      * Typically this is an area of the touchscreen, outside of the regular
-     * display, dedicated to "hardware" buttons. */
+     * display, dedicated to "hardware" buttons.
+     */
     AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY = 0x40,
 
-    /* This flag is set for the first key repeat that occurs after the
-     * long press timeout. */
+    /**
+     * This flag is set for the first key repeat that occurs after the
+     * long press timeout.
+     */
     AKEY_EVENT_FLAG_LONG_PRESS = 0x80,
 
-    /* Set when a key event has AKEY_EVENT_FLAG_CANCELED set because a long
-     * press action was executed while it was down. */
+    /**
+     * Set when a key event has AKEY_EVENT_FLAG_CANCELED set because a long
+     * press action was executed while it was down.
+     */
     AKEY_EVENT_FLAG_CANCELED_LONG_PRESS = 0x100,
 
-    /* Set for AKEY_EVENT_ACTION_UP when this event's key code is still being
+    /**
+     * Set for AKEY_EVENT_ACTION_UP when this event's key code is still being
      * tracked from its initial down.  That is, somebody requested that tracking
      * started on the key down and a long press has not caused
-     * the tracking to be canceled. */
+     * the tracking to be canceled.
+     */
     AKEY_EVENT_FLAG_TRACKING = 0x200,
 
-    /* Set when a key event has been synthesized to implement default behavior
+    /**
+     * Set when a key event has been synthesized to implement default behavior
      * for an event that the application did not handle.
      * Fallback key events are generated by unhandled trackball motions
      * (to emulate a directional keypad) and by certain unhandled key presses
      * that are declared in the key map (such as special function numeric keypad
-     * keys when numlock is off). */
+     * keys when numlock is off).
+     */
     AKEY_EVENT_FLAG_FALLBACK = 0x400,
 };
 
-/*
- * Motion event actions.
- */
-
-/* Bit shift for the action bits holding the pointer index as
+/**
+ * Bit shift for the action bits holding the pointer index as
  * defined by AMOTION_EVENT_ACTION_POINTER_INDEX_MASK.
  */
 #define AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT 8
 
+/** Motion event actions */
 enum {
-    /* Bit mask of the parts of the action code that are the action itself.
-     */
+    /** Bit mask of the parts of the action code that are the action itself. */
     AMOTION_EVENT_ACTION_MASK = 0xff,
 
-    /* Bits in the action code that represent a pointer index, used with
+    /**
+     * Bits in the action code that represent a pointer index, used with
      * AMOTION_EVENT_ACTION_POINTER_DOWN and AMOTION_EVENT_ACTION_POINTER_UP.  Shifting
      * down by AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT provides the actual pointer
      * index where the data for the pointer going up or down can be found.
      */
     AMOTION_EVENT_ACTION_POINTER_INDEX_MASK  = 0xff00,
 
-    /* A pressed gesture has started, the motion contains the initial starting location.
-     */
+    /** A pressed gesture has started, the motion contains the initial starting location. */
     AMOTION_EVENT_ACTION_DOWN = 0,
 
-    /* A pressed gesture has finished, the motion contains the final release location
+    /**
+     * A pressed gesture has finished, the motion contains the final release location
      * as well as any intermediate points since the last down or move event.
      */
     AMOTION_EVENT_ACTION_UP = 1,
 
-    /* A change has happened during a press gesture (between AMOTION_EVENT_ACTION_DOWN and
+    /**
+     * A change has happened during a press gesture (between AMOTION_EVENT_ACTION_DOWN and
      * AMOTION_EVENT_ACTION_UP).  The motion contains the most recent point, as well as
      * any intermediate points since the last down or move event.
      */
     AMOTION_EVENT_ACTION_MOVE = 2,
 
-    /* The current gesture has been aborted.
+    /**
+     * The current gesture has been aborted.
      * You will not receive any more points in it.  You should treat this as
      * an up event, but not perform any action that you normally would.
      */
     AMOTION_EVENT_ACTION_CANCEL = 3,
 
-    /* A movement has happened outside of the normal bounds of the UI element.
+    /**
+     * A movement has happened outside of the normal bounds of the UI element.
      * This does not provide a full gesture, but only the initial location of the movement/touch.
      */
     AMOTION_EVENT_ACTION_OUTSIDE = 4,
 
-    /* A non-primary pointer has gone down.
+    /**
+     * A non-primary pointer has gone down.
      * The bits in AMOTION_EVENT_ACTION_POINTER_INDEX_MASK indicate which pointer changed.
      */
     AMOTION_EVENT_ACTION_POINTER_DOWN = 5,
 
-    /* A non-primary pointer has gone up.
+    /**
+     * A non-primary pointer has gone up.
      * The bits in AMOTION_EVENT_ACTION_POINTER_INDEX_MASK indicate which pointer changed.
      */
     AMOTION_EVENT_ACTION_POINTER_UP = 6,
 
-    /* A change happened but the pointer is not down (unlike AMOTION_EVENT_ACTION_MOVE).
+    /**
+     * A change happened but the pointer is not down (unlike AMOTION_EVENT_ACTION_MOVE).
      * The motion contains the most recent point, as well as any intermediate points since
      * the last hover move event.
      */
     AMOTION_EVENT_ACTION_HOVER_MOVE = 7,
 
-    /* The motion event contains relative vertical and/or horizontal scroll offsets.
+    /**
+     * The motion event contains relative vertical and/or horizontal scroll offsets.
      * Use getAxisValue to retrieve the information from AMOTION_EVENT_AXIS_VSCROLL
      * and AMOTION_EVENT_AXIS_HSCROLL.
      * The pointer may or may not be down when this event is dispatched.
@@ -298,20 +331,19 @@
      */
     AMOTION_EVENT_ACTION_SCROLL = 8,
 
-    /* The pointer is not down but has entered the boundaries of a window or view.
-     */
+    /** The pointer is not down but has entered the boundaries of a window or view. */
     AMOTION_EVENT_ACTION_HOVER_ENTER = 9,
 
-    /* The pointer is not down but has exited the boundaries of a window or view.
-     */
+    /** The pointer is not down but has exited the boundaries of a window or view. */
     AMOTION_EVENT_ACTION_HOVER_EXIT = 10,
 };
 
-/*
+/**
  * Motion event flags.
  */
 enum {
-    /* This flag indicates that the window that received this motion event is partly
+    /**
+     * This flag indicates that the window that received this motion event is partly
      * or wholly obscured by another visible window above it.  This flag is set to true
      * even if the event did not directly pass through the obscured area.
      * A security sensitive application can check this flag to identify situations in which
@@ -323,170 +355,509 @@
     AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED = 0x1,
 };
 
-/*
+/**
  * Motion event edge touch flags.
  */
 enum {
-    /* No edges intersected */
+    /** No edges intersected. */
     AMOTION_EVENT_EDGE_FLAG_NONE = 0,
 
-    /* Flag indicating the motion event intersected the top edge of the screen. */
+    /** Flag indicating the motion event intersected the top edge of the screen. */
     AMOTION_EVENT_EDGE_FLAG_TOP = 0x01,
 
-    /* Flag indicating the motion event intersected the bottom edge of the screen. */
+    /** Flag indicating the motion event intersected the bottom edge of the screen. */
     AMOTION_EVENT_EDGE_FLAG_BOTTOM = 0x02,
 
-    /* Flag indicating the motion event intersected the left edge of the screen. */
+    /** Flag indicating the motion event intersected the left edge of the screen. */
     AMOTION_EVENT_EDGE_FLAG_LEFT = 0x04,
 
-    /* Flag indicating the motion event intersected the right edge of the screen. */
+    /** Flag indicating the motion event intersected the right edge of the screen. */
     AMOTION_EVENT_EDGE_FLAG_RIGHT = 0x08
 };
 
-/*
+/**
  * Constants that identify each individual axis of a motion event.
- * Refer to the documentation on the MotionEvent class for descriptions of each axis.
+ * @anchor AMOTION_EVENT_AXIS
  */
 enum {
+    /**
+     * Axis constant: X axis of a motion event.
+     *
+     * - For a touch screen, reports the absolute X screen position of the center of
+     * the touch contact area.  The units are display pixels.
+     * - For a touch pad, reports the absolute X surface position of the center of the touch
+     * contact area. The units are device-dependent.
+     * - For a mouse, reports the absolute X screen position of the mouse pointer.
+     * The units are display pixels.
+     * - For a trackball, reports the relative horizontal displacement of the trackball.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     * - For a joystick, reports the absolute X position of the joystick.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     */
     AMOTION_EVENT_AXIS_X = 0,
+    /**
+     * Axis constant: Y axis of a motion event.
+     *
+     * - For a touch screen, reports the absolute Y screen position of the center of
+     * the touch contact area.  The units are display pixels.
+     * - For a touch pad, reports the absolute Y surface position of the center of the touch
+     * contact area. The units are device-dependent.
+     * - For a mouse, reports the absolute Y screen position of the mouse pointer.
+     * The units are display pixels.
+     * - For a trackball, reports the relative vertical displacement of the trackball.
+     * The value is normalized to a range from -1.0 (up) to 1.0 (down).
+     * - For a joystick, reports the absolute Y position of the joystick.
+     * The value is normalized to a range from -1.0 (up or far) to 1.0 (down or near).
+     */
     AMOTION_EVENT_AXIS_Y = 1,
+    /**
+     * Axis constant: Pressure axis of a motion event.
+     *
+     * - For a touch screen or touch pad, reports the approximate pressure applied to the surface
+     * by a finger or other tool.  The value is normalized to a range from
+     * 0 (no pressure at all) to 1 (normal pressure), although values higher than 1
+     * may be generated depending on the calibration of the input device.
+     * - For a trackball, the value is set to 1 if the trackball button is pressed
+     * or 0 otherwise.
+     * - For a mouse, the value is set to 1 if the primary mouse button is pressed
+     * or 0 otherwise.
+     */
     AMOTION_EVENT_AXIS_PRESSURE = 2,
+    /**
+     * Axis constant: Size axis of a motion event.
+     *
+     * - For a touch screen or touch pad, reports the approximate size of the contact area in
+     * relation to the maximum detectable size for the device.  The value is normalized
+     * to a range from 0 (smallest detectable size) to 1 (largest detectable size),
+     * although it is not a linear scale. This value is of limited use.
+     * To obtain calibrated size information, see
+     * {@link AMOTION_EVENT_AXIS_TOUCH_MAJOR} or {@link AMOTION_EVENT_AXIS_TOOL_MAJOR}.
+     */
     AMOTION_EVENT_AXIS_SIZE = 3,
+    /**
+     * Axis constant: TouchMajor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the major axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are display pixels.
+     * - For a touch pad, reports the length of the major axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are device-dependent.
+     */
     AMOTION_EVENT_AXIS_TOUCH_MAJOR = 4,
+    /**
+     * Axis constant: TouchMinor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the minor axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are display pixels.
+     * - For a touch pad, reports the length of the minor axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are device-dependent.
+     *
+     * When the touch is circular, the major and minor axis lengths will be equal to one another.
+     */
     AMOTION_EVENT_AXIS_TOUCH_MINOR = 5,
+    /**
+     * Axis constant: ToolMajor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the major axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * - For a touch pad, reports the length of the major axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * The units are device-dependent.
+     *
+     * When the touch is circular, the major and minor axis lengths will be equal to one another.
+     *
+     * The tool size may be larger than the touch size since the tool may not be fully
+     * in contact with the touch sensor.
+     */
     AMOTION_EVENT_AXIS_TOOL_MAJOR = 6,
+    /**
+     * Axis constant: ToolMinor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the minor axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * - For a touch pad, reports the length of the minor axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * The units are device-dependent.
+     *
+     * When the touch is circular, the major and minor axis lengths will be equal to one another.
+     *
+     * The tool size may be larger than the touch size since the tool may not be fully
+     * in contact with the touch sensor.
+     */
     AMOTION_EVENT_AXIS_TOOL_MINOR = 7,
+    /**
+     * Axis constant: Orientation axis of a motion event.
+     *
+     * - For a touch screen or touch pad, reports the orientation of the finger
+     * or tool in radians relative to the vertical plane of the device.
+     * An angle of 0 radians indicates that the major axis of contact is oriented
+     * upwards, is perfectly circular or is of unknown orientation.  A positive angle
+     * indicates that the major axis of contact is oriented to the right.  A negative angle
+     * indicates that the major axis of contact is oriented to the left.
+     * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
+     * (finger pointing fully right).
+     * - For a stylus, the orientation indicates the direction in which the stylus
+     * is pointing in relation to the vertical axis of the current orientation of the screen.
+     * The range is from -PI radians to PI radians, where 0 is pointing up,
+     * -PI/2 radians is pointing left, -PI or PI radians is pointing down, and PI/2 radians
+     * is pointing right.  See also {@link AMOTION_EVENT_AXIS_TILT}.
+     */
     AMOTION_EVENT_AXIS_ORIENTATION = 8,
+    /**
+     * Axis constant: Vertical Scroll axis of a motion event.
+     *
+     * - For a mouse, reports the relative movement of the vertical scroll wheel.
+     * The value is normalized to a range from -1.0 (down) to 1.0 (up).
+     *
+     * This axis should be used to scroll views vertically.
+     */
     AMOTION_EVENT_AXIS_VSCROLL = 9,
+    /**
+     * Axis constant: Horizontal Scroll axis of a motion event.
+     *
+     * - For a mouse, reports the relative movement of the horizontal scroll wheel.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     *
+     * This axis should be used to scroll views horizontally.
+     */
     AMOTION_EVENT_AXIS_HSCROLL = 10,
+    /**
+     * Axis constant: Z axis of a motion event.
+     *
+     * - For a joystick, reports the absolute Z position of the joystick.
+     * The value is normalized to a range from -1.0 (high) to 1.0 (low).
+     * <em>On game pads with two analog joysticks, this axis is often reinterpreted
+     * to report the absolute X position of the second joystick instead.</em>
+     */
     AMOTION_EVENT_AXIS_Z = 11,
+    /**
+     * Axis constant: X Rotation axis of a motion event.
+     *
+     * - For a joystick, reports the absolute rotation angle about the X axis.
+     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
+     */
     AMOTION_EVENT_AXIS_RX = 12,
+    /**
+     * Axis constant: Y Rotation axis of a motion event.
+     *
+     * - For a joystick, reports the absolute rotation angle about the Y axis.
+     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
+     */
     AMOTION_EVENT_AXIS_RY = 13,
+    /**
+     * Axis constant: Z Rotation axis of a motion event.
+     *
+     * - For a joystick, reports the absolute rotation angle about the Z axis.
+     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
+     * On game pads with two analog joysticks, this axis is often reinterpreted
+     * to report the absolute Y position of the second joystick instead.
+     */
     AMOTION_EVENT_AXIS_RZ = 14,
+    /**
+     * Axis constant: Hat X axis of a motion event.
+     *
+     * - For a joystick, reports the absolute X position of the directional hat control.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     */
     AMOTION_EVENT_AXIS_HAT_X = 15,
+    /**
+     * Axis constant: Hat Y axis of a motion event.
+     *
+     * - For a joystick, reports the absolute Y position of the directional hat control.
+     * The value is normalized to a range from -1.0 (up) to 1.0 (down).
+     */
     AMOTION_EVENT_AXIS_HAT_Y = 16,
+    /**
+     * Axis constant: Left Trigger axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the left trigger control.
+     * The value is normalized to a range from 0.0 (released) to 1.0 (fully pressed).
+     */
     AMOTION_EVENT_AXIS_LTRIGGER = 17,
+    /**
+     * Axis constant: Right Trigger axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the right trigger control.
+     * The value is normalized to a range from 0.0 (released) to 1.0 (fully pressed).
+     */
     AMOTION_EVENT_AXIS_RTRIGGER = 18,
+    /**
+     * Axis constant: Throttle axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the throttle control.
+     * The value is normalized to a range from 0.0 (fully open) to 1.0 (fully closed).
+     */
     AMOTION_EVENT_AXIS_THROTTLE = 19,
+    /**
+     * Axis constant: Rudder axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the rudder control.
+     * The value is normalized to a range from -1.0 (turn left) to 1.0 (turn right).
+     */
     AMOTION_EVENT_AXIS_RUDDER = 20,
+    /**
+     * Axis constant: Wheel axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the steering wheel control.
+     * The value is normalized to a range from -1.0 (turn left) to 1.0 (turn right).
+     */
     AMOTION_EVENT_AXIS_WHEEL = 21,
+    /**
+     * Axis constant: Gas axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the gas (accelerator) control.
+     * The value is normalized to a range from 0.0 (no acceleration)
+     * to 1.0 (maximum acceleration).
+     */
     AMOTION_EVENT_AXIS_GAS = 22,
+    /**
+     * Axis constant: Brake axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the brake control.
+     * The value is normalized to a range from 0.0 (no braking) to 1.0 (maximum braking).
+     */
     AMOTION_EVENT_AXIS_BRAKE = 23,
+    /**
+     * Axis constant: Distance axis of a motion event.
+     *
+     * - For a stylus, reports the distance of the stylus from the screen.
+     * A value of 0.0 indicates direct contact and larger values indicate increasing
+     * distance from the surface.
+     */
     AMOTION_EVENT_AXIS_DISTANCE = 24,
+    /**
+     * Axis constant: Tilt axis of a motion event.
+     *
+     * - For a stylus, reports the tilt angle of the stylus in radians where
+     * 0 radians indicates that the stylus is being held perpendicular to the
+     * surface, and PI/2 radians indicates that the stylus is being held flat
+     * against the surface.
+     */
     AMOTION_EVENT_AXIS_TILT = 25,
+    /**
+     * Axis constant: Generic 1 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_1 = 32,
+    /**
+     * Axis constant: Generic 2 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_2 = 33,
+    /**
+     * Axis constant: Generic 3 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_3 = 34,
+    /**
+     * Axis constant: Generic 4 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_4 = 35,
+    /**
+     * Axis constant: Generic 5 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_5 = 36,
+    /**
+     * Axis constant: Generic 6 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_6 = 37,
+    /**
+     * Axis constant: Generic 7 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_7 = 38,
+    /**
+     * Axis constant: Generic 8 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_8 = 39,
+    /**
+     * Axis constant: Generic 9 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_9 = 40,
+    /**
+     * Axis constant: Generic 10 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_10 = 41,
+    /**
+     * Axis constant: Generic 11 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_11 = 42,
+    /**
+     * Axis constant: Generic 12 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_12 = 43,
+    /**
+     * Axis constant: Generic 13 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_13 = 44,
+    /**
+     * Axis constant: Generic 14 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_14 = 45,
+    /**
+     * Axis constant: Generic 15 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_15 = 46,
+    /**
+     * Axis constant: Generic 16 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
     AMOTION_EVENT_AXIS_GENERIC_16 = 47,
 
     // NOTE: If you add a new axis here you must also add it to several other files.
     //       Refer to frameworks/base/core/java/android/view/MotionEvent.java for the full list.
 };
 
-/*
+/**
  * Constants that identify buttons that are associated with motion events.
  * Refer to the documentation on the MotionEvent class for descriptions of each button.
  */
 enum {
+    /** primary */
     AMOTION_EVENT_BUTTON_PRIMARY = 1 << 0,
+    /** secondary */
     AMOTION_EVENT_BUTTON_SECONDARY = 1 << 1,
+    /** tertiary */
     AMOTION_EVENT_BUTTON_TERTIARY = 1 << 2,
+    /** back */
     AMOTION_EVENT_BUTTON_BACK = 1 << 3,
+    /** forward */
     AMOTION_EVENT_BUTTON_FORWARD = 1 << 4,
 };
 
-/*
+/**
  * Constants that identify tool types.
  * Refer to the documentation on the MotionEvent class for descriptions of each tool type.
  */
 enum {
+    /** unknown */
     AMOTION_EVENT_TOOL_TYPE_UNKNOWN = 0,
+    /** finger */
     AMOTION_EVENT_TOOL_TYPE_FINGER = 1,
+    /** stylus */
     AMOTION_EVENT_TOOL_TYPE_STYLUS = 2,
+    /** mouse */
     AMOTION_EVENT_TOOL_TYPE_MOUSE = 3,
+    /** eraser */
     AMOTION_EVENT_TOOL_TYPE_ERASER = 4,
 };
 
-/*
- * Input sources.
+/**
+ * Input source masks.
  *
  * Refer to the documentation on android.view.InputDevice for more details about input sources
  * and their correct interpretation.
  */
 enum {
+    /** mask */
     AINPUT_SOURCE_CLASS_MASK = 0x000000ff,
 
+    /** none */
     AINPUT_SOURCE_CLASS_NONE = 0x00000000,
+    /** button */
     AINPUT_SOURCE_CLASS_BUTTON = 0x00000001,
+    /** pointer */
     AINPUT_SOURCE_CLASS_POINTER = 0x00000002,
+    /** navigation */
     AINPUT_SOURCE_CLASS_NAVIGATION = 0x00000004,
+    /** position */
     AINPUT_SOURCE_CLASS_POSITION = 0x00000008,
+    /** joystick */
     AINPUT_SOURCE_CLASS_JOYSTICK = 0x00000010,
 };
 
+/**
+ * Input sources.
+ */
 enum {
+    /** unknown */
     AINPUT_SOURCE_UNKNOWN = 0x00000000,
 
+    /** keyboard */
     AINPUT_SOURCE_KEYBOARD = 0x00000100 | AINPUT_SOURCE_CLASS_BUTTON,
+    /** dpad */
     AINPUT_SOURCE_DPAD = 0x00000200 | AINPUT_SOURCE_CLASS_BUTTON,
+    /** gamepad */
     AINPUT_SOURCE_GAMEPAD = 0x00000400 | AINPUT_SOURCE_CLASS_BUTTON,
+    /** touchscreen */
     AINPUT_SOURCE_TOUCHSCREEN = 0x00001000 | AINPUT_SOURCE_CLASS_POINTER,
+    /** mouse */
     AINPUT_SOURCE_MOUSE = 0x00002000 | AINPUT_SOURCE_CLASS_POINTER,
+    /** stylus */
     AINPUT_SOURCE_STYLUS = 0x00004000 | AINPUT_SOURCE_CLASS_POINTER,
+    /** trackball */
     AINPUT_SOURCE_TRACKBALL = 0x00010000 | AINPUT_SOURCE_CLASS_NAVIGATION,
+    /** touchpad */
     AINPUT_SOURCE_TOUCHPAD = 0x00100000 | AINPUT_SOURCE_CLASS_POSITION,
+    /** navigation */
     AINPUT_SOURCE_TOUCH_NAVIGATION = 0x00200000 | AINPUT_SOURCE_CLASS_NONE,
+    /** joystick */
     AINPUT_SOURCE_JOYSTICK = 0x01000000 | AINPUT_SOURCE_CLASS_JOYSTICK,
 
+    /** any */
     AINPUT_SOURCE_ANY = 0xffffff00,
 };
 
-/*
+/**
  * Keyboard types.
  *
  * Refer to the documentation on android.view.InputDevice for more details.
  */
 enum {
+    /** none */
     AINPUT_KEYBOARD_TYPE_NONE = 0,
+    /** non alphabetic */
     AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC = 1,
+    /** alphabetic */
     AINPUT_KEYBOARD_TYPE_ALPHABETIC = 2,
 };
 
-/*
+/**
  * Constants used to retrieve information about the range of motion for a particular
  * coordinate of a motion event.
  *
  * Refer to the documentation on android.view.InputDevice for more details about input sources
  * and their correct interpretation.
  *
- * DEPRECATION NOTICE: These constants are deprecated.  Use AMOTION_EVENT_AXIS_* constants instead.
+ * @deprecated These constants are deprecated. Use {@link AMOTION_EVENT_AXIS AMOTION_EVENT_AXIS_*} constants instead.
  */
 enum {
+    /** x */
     AINPUT_MOTION_RANGE_X = AMOTION_EVENT_AXIS_X,
+    /** y */
     AINPUT_MOTION_RANGE_Y = AMOTION_EVENT_AXIS_Y,
+    /** pressure */
     AINPUT_MOTION_RANGE_PRESSURE = AMOTION_EVENT_AXIS_PRESSURE,
+    /** size */
     AINPUT_MOTION_RANGE_SIZE = AMOTION_EVENT_AXIS_SIZE,
+    /** touch major */
     AINPUT_MOTION_RANGE_TOUCH_MAJOR = AMOTION_EVENT_AXIS_TOUCH_MAJOR,
+    /** touch minor */
     AINPUT_MOTION_RANGE_TOUCH_MINOR = AMOTION_EVENT_AXIS_TOUCH_MINOR,
+    /** tool major */
     AINPUT_MOTION_RANGE_TOOL_MAJOR = AMOTION_EVENT_AXIS_TOOL_MAJOR,
+    /** tool minor */
     AINPUT_MOTION_RANGE_TOOL_MINOR = AMOTION_EVENT_AXIS_TOOL_MINOR,
+    /** orientation */
     AINPUT_MOTION_RANGE_ORIENTATION = AMOTION_EVENT_AXIS_ORIENTATION,
-} __attribute__ ((deprecated));
+};
 
 
-/*
+/**
  * Input event accessors.
  *
  * Note that most functions can only be used on input events that are of a given type.
@@ -495,10 +866,10 @@
 
 /*** Accessors for all input events. ***/
 
-/* Get the input event type. */
+/** Get the input event type. */
 int32_t AInputEvent_getType(const AInputEvent* event);
 
-/* Get the id for the device that an input event came from.
+/** Get the id for the device that an input event came from.
  *
  * Input events can be generated by multiple different input devices.
  * Use the input device id to obtain information about the input
@@ -510,272 +881,351 @@
  */
 int32_t AInputEvent_getDeviceId(const AInputEvent* event);
 
-/* Get the input event source. */
+/** Get the input event source. */
 int32_t AInputEvent_getSource(const AInputEvent* event);
 
 /*** Accessors for key events only. ***/
 
-/* Get the key event action. */
+/** Get the key event action. */
 int32_t AKeyEvent_getAction(const AInputEvent* key_event);
 
-/* Get the key event flags. */
+/** Get the key event flags. */
 int32_t AKeyEvent_getFlags(const AInputEvent* key_event);
 
-/* Get the key code of the key event.
- * This is the physical key that was pressed, not the Unicode character. */
+/**
+ * Get the key code of the key event.
+ * This is the physical key that was pressed, not the Unicode character.
+ */
 int32_t AKeyEvent_getKeyCode(const AInputEvent* key_event);
 
-/* Get the hardware key id of this key event.
- * These values are not reliable and vary from device to device. */
+/**
+ * Get the hardware key id of this key event.
+ * These values are not reliable and vary from device to device.
+ */
 int32_t AKeyEvent_getScanCode(const AInputEvent* key_event);
 
-/* Get the meta key state. */
+/** Get the meta key state. */
 int32_t AKeyEvent_getMetaState(const AInputEvent* key_event);
 
-/* Get the repeat count of the event.
+/**
+ * Get the repeat count of the event.
  * For both key up an key down events, this is the number of times the key has
  * repeated with the first down starting at 0 and counting up from there.  For
- * multiple key events, this is the number of down/up pairs that have occurred. */
+ * multiple key events, this is the number of down/up pairs that have occurred.
+ */
 int32_t AKeyEvent_getRepeatCount(const AInputEvent* key_event);
 
-/* Get the time of the most recent key down event, in the
+/**
+ * Get the time of the most recent key down event, in the
  * java.lang.System.nanoTime() time base.  If this is a down event,
  * this will be the same as eventTime.
  * Note that when chording keys, this value is the down time of the most recently
- * pressed key, which may not be the same physical key of this event. */
+ * pressed key, which may not be the same physical key of this event.
+ */
 int64_t AKeyEvent_getDownTime(const AInputEvent* key_event);
 
-/* Get the time this event occurred, in the
- * java.lang.System.nanoTime() time base. */
+/**
+ * Get the time this event occurred, in the
+ * java.lang.System.nanoTime() time base.
+ */
 int64_t AKeyEvent_getEventTime(const AInputEvent* key_event);
 
 /*** Accessors for motion events only. ***/
 
-/* Get the combined motion event action code and pointer index. */
+/** Get the combined motion event action code and pointer index. */
 int32_t AMotionEvent_getAction(const AInputEvent* motion_event);
 
-/* Get the motion event flags. */
+/** Get the motion event flags. */
 int32_t AMotionEvent_getFlags(const AInputEvent* motion_event);
 
-/* Get the state of any meta / modifier keys that were in effect when the
- * event was generated. */
+/**
+ * Get the state of any meta / modifier keys that were in effect when the
+ * event was generated.
+ */
 int32_t AMotionEvent_getMetaState(const AInputEvent* motion_event);
 
-/* Get the button state of all buttons that are pressed. */
+/** Get the button state of all buttons that are pressed. */
 int32_t AMotionEvent_getButtonState(const AInputEvent* motion_event);
 
-/* Get a bitfield indicating which edges, if any, were touched by this motion event.
+/**
+ * Get a bitfield indicating which edges, if any, were touched by this motion event.
  * For touch events, clients can use this to determine if the user's finger was
- * touching the edge of the display. */
+ * touching the edge of the display.
+ */
 int32_t AMotionEvent_getEdgeFlags(const AInputEvent* motion_event);
 
-/* Get the time when the user originally pressed down to start a stream of
- * position events, in the java.lang.System.nanoTime() time base. */
+/**
+ * Get the time when the user originally pressed down to start a stream of
+ * position events, in the java.lang.System.nanoTime() time base.
+ */
 int64_t AMotionEvent_getDownTime(const AInputEvent* motion_event);
 
-/* Get the time when this specific event was generated,
- * in the java.lang.System.nanoTime() time base. */
+/**
+ * Get the time when this specific event was generated,
+ * in the java.lang.System.nanoTime() time base.
+ */
 int64_t AMotionEvent_getEventTime(const AInputEvent* motion_event);
 
-/* Get the X coordinate offset.
+/**
+ * Get the X coordinate offset.
  * For touch events on the screen, this is the delta that was added to the raw
  * screen coordinates to adjust for the absolute position of the containing windows
- * and views. */
+ * and views.
+ */
 float AMotionEvent_getXOffset(const AInputEvent* motion_event);
 
-/* Get the Y coordinate offset.
+/**
+ * Get the Y coordinate offset.
  * For touch events on the screen, this is the delta that was added to the raw
  * screen coordinates to adjust for the absolute position of the containing windows
- * and views. */
+ * and views.
+ */
 float AMotionEvent_getYOffset(const AInputEvent* motion_event);
 
-/* Get the precision of the X coordinates being reported.
+/**
+ * Get the precision of the X coordinates being reported.
  * You can multiply this number with an X coordinate sample to find the
- * actual hardware value of the X coordinate. */
+ * actual hardware value of the X coordinate.
+ */
 float AMotionEvent_getXPrecision(const AInputEvent* motion_event);
 
-/* Get the precision of the Y coordinates being reported.
+/**
+ * Get the precision of the Y coordinates being reported.
  * You can multiply this number with a Y coordinate sample to find the
- * actual hardware value of the Y coordinate. */
+ * actual hardware value of the Y coordinate.
+ */
 float AMotionEvent_getYPrecision(const AInputEvent* motion_event);
 
-/* Get the number of pointers of data contained in this event.
- * Always >= 1. */
+/**
+ * Get the number of pointers of data contained in this event.
+ * Always >= 1.
+ */
 size_t AMotionEvent_getPointerCount(const AInputEvent* motion_event);
 
-/* Get the pointer identifier associated with a particular pointer
+/**
+ * Get the pointer identifier associated with a particular pointer
  * data index in this event.  The identifier tells you the actual pointer
  * number associated with the data, accounting for individual pointers
- * going up and down since the start of the current gesture. */
+ * going up and down since the start of the current gesture.
+ */
 int32_t AMotionEvent_getPointerId(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the tool type of a pointer for the given pointer index.
+/**
+ * Get the tool type of a pointer for the given pointer index.
  * The tool type indicates the type of tool used to make contact such as a
- * finger or stylus, if known. */
+ * finger or stylus, if known.
+ */
 int32_t AMotionEvent_getToolType(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the original raw X coordinate of this event.
+/**
+ * Get the original raw X coordinate of this event.
  * For touch events on the screen, this is the original location of the event
  * on the screen, before it had been adjusted for the containing window
- * and views. */
+ * and views.
+ */
 float AMotionEvent_getRawX(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the original raw X coordinate of this event.
+/**
+ * Get the original raw X coordinate of this event.
  * For touch events on the screen, this is the original location of the event
  * on the screen, before it had been adjusted for the containing window
- * and views. */
+ * and views.
+ */
 float AMotionEvent_getRawY(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current X coordinate of this event for the given pointer index.
+/**
+ * Get the current X coordinate of this event for the given pointer index.
  * Whole numbers are pixels; the value may have a fraction for input devices
- * that are sub-pixel precise. */
+ * that are sub-pixel precise.
+ */
 float AMotionEvent_getX(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current Y coordinate of this event for the given pointer index.
+/**
+ * Get the current Y coordinate of this event for the given pointer index.
  * Whole numbers are pixels; the value may have a fraction for input devices
- * that are sub-pixel precise. */
+ * that are sub-pixel precise.
+ */
 float AMotionEvent_getY(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current pressure of this event for the given pointer index.
+/**
+ * Get the current pressure of this event for the given pointer index.
  * The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure),
  * although values higher than 1 may be generated depending on the calibration of
- * the input device. */
+ * the input device.
+ */
 float AMotionEvent_getPressure(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current scaled value of the approximate size for the given pointer index.
+/**
+ * Get the current scaled value of the approximate size for the given pointer index.
  * This represents some approximation of the area of the screen being
  * pressed; the actual value in pixels corresponding to the
  * touch is normalized with the device specific range of values
  * and scaled to a value between 0 and 1.  The value of size can be used to
- * determine fat touch events. */
+ * determine fat touch events.
+ */
 float AMotionEvent_getSize(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current length of the major axis of an ellipse that describes the touch area
- * at the point of contact for the given pointer index. */
+/**
+ * Get the current length of the major axis of an ellipse that describes the touch area
+ * at the point of contact for the given pointer index.
+ */
 float AMotionEvent_getTouchMajor(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current length of the minor axis of an ellipse that describes the touch area
- * at the point of contact for the given pointer index. */
+/**
+ * Get the current length of the minor axis of an ellipse that describes the touch area
+ * at the point of contact for the given pointer index.
+ */
 float AMotionEvent_getTouchMinor(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current length of the major axis of an ellipse that describes the size
+/**
+ * Get the current length of the major axis of an ellipse that describes the size
  * of the approaching tool for the given pointer index.
  * The tool area represents the estimated size of the finger or pen that is
- * touching the device independent of its actual touch area at the point of contact. */
+ * touching the device independent of its actual touch area at the point of contact.
+ */
 float AMotionEvent_getToolMajor(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current length of the minor axis of an ellipse that describes the size
+/**
+ * Get the current length of the minor axis of an ellipse that describes the size
  * of the approaching tool for the given pointer index.
  * The tool area represents the estimated size of the finger or pen that is
- * touching the device independent of its actual touch area at the point of contact. */
+ * touching the device independent of its actual touch area at the point of contact.
+ */
 float AMotionEvent_getToolMinor(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the current orientation of the touch area and tool area in radians clockwise from
+/**
+ * Get the current orientation of the touch area and tool area in radians clockwise from
  * vertical for the given pointer index.
  * An angle of 0 degrees indicates that the major axis of contact is oriented
  * upwards, is perfectly circular or is of unknown orientation.  A positive angle
  * indicates that the major axis of contact is oriented to the right.  A negative angle
  * indicates that the major axis of contact is oriented to the left.
  * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
- * (finger pointing fully right). */
+ * (finger pointing fully right).
+ */
 float AMotionEvent_getOrientation(const AInputEvent* motion_event, size_t pointer_index);
 
-/* Get the value of the request axis for the given pointer index. */
+/** Get the value of the request axis for the given pointer index. */
 float AMotionEvent_getAxisValue(const AInputEvent* motion_event,
         int32_t axis, size_t pointer_index);
 
-/* Get the number of historical points in this event.  These are movements that
+/**
+ * Get the number of historical points in this event.  These are movements that
  * have occurred between this event and the previous event.  This only applies
  * to AMOTION_EVENT_ACTION_MOVE events -- all other actions will have a size of 0.
- * Historical samples are indexed from oldest to newest. */
+ * Historical samples are indexed from oldest to newest.
+ */
 size_t AMotionEvent_getHistorySize(const AInputEvent* motion_event);
 
-/* Get the time that a historical movement occurred between this event and
- * the previous event, in the java.lang.System.nanoTime() time base. */
+/**
+ * Get the time that a historical movement occurred between this event and
+ * the previous event, in the java.lang.System.nanoTime() time base.
+ */
 int64_t AMotionEvent_getHistoricalEventTime(const AInputEvent* motion_event,
         size_t history_index);
 
-/* Get the historical raw X coordinate of this event for the given pointer index that
+/**
+ * Get the historical raw X coordinate of this event for the given pointer index that
  * occurred between this event and the previous motion event.
  * For touch events on the screen, this is the original location of the event
  * on the screen, before it had been adjusted for the containing window
  * and views.
  * Whole numbers are pixels; the value may have a fraction for input devices
- * that are sub-pixel precise. */
+ * that are sub-pixel precise.
+ */
 float AMotionEvent_getHistoricalRawX(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical raw Y coordinate of this event for the given pointer index that
+/**
+ * Get the historical raw Y coordinate of this event for the given pointer index that
  * occurred between this event and the previous motion event.
  * For touch events on the screen, this is the original location of the event
  * on the screen, before it had been adjusted for the containing window
  * and views.
  * Whole numbers are pixels; the value may have a fraction for input devices
- * that are sub-pixel precise. */
+ * that are sub-pixel precise.
+ */
 float AMotionEvent_getHistoricalRawY(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical X coordinate of this event for the given pointer index that
+/**
+ * Get the historical X coordinate of this event for the given pointer index that
  * occurred between this event and the previous motion event.
  * Whole numbers are pixels; the value may have a fraction for input devices
- * that are sub-pixel precise. */
+ * that are sub-pixel precise.
+ */
 float AMotionEvent_getHistoricalX(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical Y coordinate of this event for the given pointer index that
+/**
+ * Get the historical Y coordinate of this event for the given pointer index that
  * occurred between this event and the previous motion event.
  * Whole numbers are pixels; the value may have a fraction for input devices
- * that are sub-pixel precise. */
+ * that are sub-pixel precise.
+ */
 float AMotionEvent_getHistoricalY(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical pressure of this event for the given pointer index that
+/**
+ * Get the historical pressure of this event for the given pointer index that
  * occurred between this event and the previous motion event.
  * The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure),
  * although values higher than 1 may be generated depending on the calibration of
- * the input device. */
+ * the input device.
+ */
 float AMotionEvent_getHistoricalPressure(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the current scaled value of the approximate size for the given pointer index that
+/**
+ * Get the current scaled value of the approximate size for the given pointer index that
  * occurred between this event and the previous motion event.
  * This represents some approximation of the area of the screen being
  * pressed; the actual value in pixels corresponding to the
  * touch is normalized with the device specific range of values
  * and scaled to a value between 0 and 1.  The value of size can be used to
- * determine fat touch events. */
+ * determine fat touch events.
+ */
 float AMotionEvent_getHistoricalSize(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical length of the major axis of an ellipse that describes the touch area
+/**
+ * Get the historical length of the major axis of an ellipse that describes the touch area
  * at the point of contact for the given pointer index that
- * occurred between this event and the previous motion event. */
+ * occurred between this event and the previous motion event.
+ */
 float AMotionEvent_getHistoricalTouchMajor(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical length of the minor axis of an ellipse that describes the touch area
+/**
+ * Get the historical length of the minor axis of an ellipse that describes the touch area
  * at the point of contact for the given pointer index that
- * occurred between this event and the previous motion event. */
+ * occurred between this event and the previous motion event.
+ */
 float AMotionEvent_getHistoricalTouchMinor(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical length of the major axis of an ellipse that describes the size
+/**
+ * Get the historical length of the major axis of an ellipse that describes the size
  * of the approaching tool for the given pointer index that
  * occurred between this event and the previous motion event.
  * The tool area represents the estimated size of the finger or pen that is
- * touching the device independent of its actual touch area at the point of contact. */
+ * touching the device independent of its actual touch area at the point of contact.
+ */
 float AMotionEvent_getHistoricalToolMajor(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical length of the minor axis of an ellipse that describes the size
+/**
+ * Get the historical length of the minor axis of an ellipse that describes the size
  * of the approaching tool for the given pointer index that
  * occurred between this event and the previous motion event.
  * The tool area represents the estimated size of the finger or pen that is
- * touching the device independent of its actual touch area at the point of contact. */
+ * touching the device independent of its actual touch area at the point of contact.
+ */
 float AMotionEvent_getHistoricalToolMinor(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical orientation of the touch area and tool area in radians clockwise from
+/**
+ * Get the historical orientation of the touch area and tool area in radians clockwise from
  * vertical for the given pointer index that
  * occurred between this event and the previous motion event.
  * An angle of 0 degrees indicates that the major axis of contact is oriented
@@ -783,51 +1233,54 @@
  * indicates that the major axis of contact is oriented to the right.  A negative angle
  * indicates that the major axis of contact is oriented to the left.
  * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
- * (finger pointing fully right). */
+ * (finger pointing fully right).
+ */
 float AMotionEvent_getHistoricalOrientation(const AInputEvent* motion_event, size_t pointer_index,
         size_t history_index);
 
-/* Get the historical value of the request axis for the given pointer index
- * that occurred between this event and the previous motion event. */
+/**
+ * Get the historical value of the request axis for the given pointer index
+ * that occurred between this event and the previous motion event.
+ */
 float AMotionEvent_getHistoricalAxisValue(const AInputEvent* motion_event,
         int32_t axis, size_t pointer_index, size_t history_index);
 
 
-/*
+struct AInputQueue;
+/**
  * Input queue
  *
  * An input queue is the facility through which you retrieve input
  * events.
  */
-struct AInputQueue;
 typedef struct AInputQueue AInputQueue;
 
-/*
+/**
  * Add this input queue to a looper for processing.  See
  * ALooper_addFd() for information on the ident, callback, and data params.
  */
 void AInputQueue_attachLooper(AInputQueue* queue, ALooper* looper,
         int ident, ALooper_callbackFunc callback, void* data);
 
-/*
+/**
  * Remove the input queue from the looper it is currently attached to.
  */
 void AInputQueue_detachLooper(AInputQueue* queue);
 
-/*
+/**
  * Returns true if there are one or more events available in the
  * input queue.  Returns 1 if the queue has events; 0 if
  * it does not have events; and a negative value if there is an error.
  */
 int32_t AInputQueue_hasEvents(AInputQueue* queue);
 
-/*
+/**
  * Returns the next available event from the queue.  Returns a negative
  * value if no events are available or an error has occurred.
  */
 int32_t AInputQueue_getEvent(AInputQueue* queue, AInputEvent** outEvent);
 
-/*
+/**
  * Sends the key for standard pre-dispatching -- that is, possibly deliver
  * it to the current IME to be consumed before the app.  Returns 0 if it
  * was not pre-dispatched, meaning you can process it right now.  If non-zero
@@ -837,7 +1290,7 @@
  */
 int32_t AInputQueue_preDispatchEvent(AInputQueue* queue, AInputEvent* event);
 
-/*
+/**
  * Report that dispatching has finished with the given event.
  * This must be called after receiving an event with AInputQueue_get_event().
  */
@@ -848,3 +1301,5 @@
 #endif
 
 #endif // _ANDROID_INPUT_H
+
+/** @} */
diff --git a/include/android/keycodes.h b/include/android/keycodes.h
index 75d0ab6..ec4b0c8 100644
--- a/include/android/keycodes.h
+++ b/include/android/keycodes.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Input
+ * @{
+ */
+
+/**
+ * @file keycodes.h
+ */
+
 #ifndef _ANDROID_KEYCODES_H
 #define _ANDROID_KEYCODES_H
 
@@ -39,269 +48,676 @@
 extern "C" {
 #endif
 
-/*
+/**
  * Key codes.
  */
 enum {
+    /** Unknown key code. */
     AKEYCODE_UNKNOWN         = 0,
+    /** Soft Left key.
+     * Usually situated below the display on phones and used as a multi-function
+     * feature key for selecting a software defined function shown on the bottom left
+     * of the display. */
     AKEYCODE_SOFT_LEFT       = 1,
+    /** Soft Right key.
+     * Usually situated below the display on phones and used as a multi-function
+     * feature key for selecting a software defined function shown on the bottom right
+     * of the display. */
     AKEYCODE_SOFT_RIGHT      = 2,
+    /** Home key.
+     * This key is handled by the framework and is never delivered to applications. */
     AKEYCODE_HOME            = 3,
+    /** Back key. */
     AKEYCODE_BACK            = 4,
+    /** Call key. */
     AKEYCODE_CALL            = 5,
+    /** End Call key. */
     AKEYCODE_ENDCALL         = 6,
+    /** '0' key. */
     AKEYCODE_0               = 7,
+    /** '1' key. */
     AKEYCODE_1               = 8,
+    /** '2' key. */
     AKEYCODE_2               = 9,
+    /** '3' key. */
     AKEYCODE_3               = 10,
+    /** '4' key. */
     AKEYCODE_4               = 11,
+    /** '5' key. */
     AKEYCODE_5               = 12,
+    /** '6' key. */
     AKEYCODE_6               = 13,
+    /** '7' key. */
     AKEYCODE_7               = 14,
+    /** '8' key. */
     AKEYCODE_8               = 15,
+    /** '9' key. */
     AKEYCODE_9               = 16,
+    /** '*' key. */
     AKEYCODE_STAR            = 17,
+    /** '#' key. */
     AKEYCODE_POUND           = 18,
+    /** Directional Pad Up key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_UP         = 19,
+    /** Directional Pad Down key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_DOWN       = 20,
+    /** Directional Pad Left key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_LEFT       = 21,
+    /** Directional Pad Right key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_RIGHT      = 22,
+    /** Directional Pad Center key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_CENTER     = 23,
+    /** Volume Up key.
+     * Adjusts the speaker volume up. */
     AKEYCODE_VOLUME_UP       = 24,
+    /** Volume Down key.
+     * Adjusts the speaker volume down. */
     AKEYCODE_VOLUME_DOWN     = 25,
+    /** Power key. */
     AKEYCODE_POWER           = 26,
+    /** Camera key.
+     * Used to launch a camera application or take pictures. */
     AKEYCODE_CAMERA          = 27,
+    /** Clear key. */
     AKEYCODE_CLEAR           = 28,
+    /** 'A' key. */
     AKEYCODE_A               = 29,
+    /** 'B' key. */
     AKEYCODE_B               = 30,
+    /** 'C' key. */
     AKEYCODE_C               = 31,
+    /** 'D' key. */
     AKEYCODE_D               = 32,
+    /** 'E' key. */
     AKEYCODE_E               = 33,
+    /** 'F' key. */
     AKEYCODE_F               = 34,
+    /** 'G' key. */
     AKEYCODE_G               = 35,
+    /** 'H' key. */
     AKEYCODE_H               = 36,
+    /** 'I' key. */
     AKEYCODE_I               = 37,
+    /** 'J' key. */
     AKEYCODE_J               = 38,
+    /** 'K' key. */
     AKEYCODE_K               = 39,
+    /** 'L' key. */
     AKEYCODE_L               = 40,
+    /** 'M' key. */
     AKEYCODE_M               = 41,
+    /** 'N' key. */
     AKEYCODE_N               = 42,
+    /** 'O' key. */
     AKEYCODE_O               = 43,
+    /** 'P' key. */
     AKEYCODE_P               = 44,
+    /** 'Q' key. */
     AKEYCODE_Q               = 45,
+    /** 'R' key. */
     AKEYCODE_R               = 46,
+    /** 'S' key. */
     AKEYCODE_S               = 47,
+    /** 'T' key. */
     AKEYCODE_T               = 48,
+    /** 'U' key. */
     AKEYCODE_U               = 49,
+    /** 'V' key. */
     AKEYCODE_V               = 50,
+    /** 'W' key. */
     AKEYCODE_W               = 51,
+    /** 'X' key. */
     AKEYCODE_X               = 52,
+    /** 'Y' key. */
     AKEYCODE_Y               = 53,
+    /** 'Z' key. */
     AKEYCODE_Z               = 54,
+    /** ',' key. */
     AKEYCODE_COMMA           = 55,
+    /** '.' key. */
     AKEYCODE_PERIOD          = 56,
+    /** Left Alt modifier key. */
     AKEYCODE_ALT_LEFT        = 57,
+    /** Right Alt modifier key. */
     AKEYCODE_ALT_RIGHT       = 58,
+    /** Left Shift modifier key. */
     AKEYCODE_SHIFT_LEFT      = 59,
+    /** Right Shift modifier key. */
     AKEYCODE_SHIFT_RIGHT     = 60,
+    /** Tab key. */
     AKEYCODE_TAB             = 61,
+    /** Space key. */
     AKEYCODE_SPACE           = 62,
+    /** Symbol modifier key.
+     * Used to enter alternate symbols. */
     AKEYCODE_SYM             = 63,
+    /** Explorer special function key.
+     * Used to launch a browser application. */
     AKEYCODE_EXPLORER        = 64,
+    /** Envelope special function key.
+     * Used to launch a mail application. */
     AKEYCODE_ENVELOPE        = 65,
+    /** Enter key. */
     AKEYCODE_ENTER           = 66,
+    /** Backspace key.
+     * Deletes characters before the insertion point, unlike {@link AKEYCODE_FORWARD_DEL}. */
     AKEYCODE_DEL             = 67,
+    /** '`' (backtick) key. */
     AKEYCODE_GRAVE           = 68,
+    /** '-'. */
     AKEYCODE_MINUS           = 69,
+    /** '=' key. */
     AKEYCODE_EQUALS          = 70,
+    /** '[' key. */
     AKEYCODE_LEFT_BRACKET    = 71,
+    /** ']' key. */
     AKEYCODE_RIGHT_BRACKET   = 72,
+    /** '\' key. */
     AKEYCODE_BACKSLASH       = 73,
+    /** ';' key. */
     AKEYCODE_SEMICOLON       = 74,
+    /** ''' (apostrophe) key. */
     AKEYCODE_APOSTROPHE      = 75,
+    /** '/' key. */
     AKEYCODE_SLASH           = 76,
+    /** '@' key. */
     AKEYCODE_AT              = 77,
+    /** Number modifier key.
+     * Used to enter numeric symbols.
+     * This key is not {@link AKEYCODE_NUM_LOCK}; it is more like {@link AKEYCODE_ALT_LEFT}. */
     AKEYCODE_NUM             = 78,
+    /** Headset Hook key.
+     * Used to hang up calls and stop media. */
     AKEYCODE_HEADSETHOOK     = 79,
-    AKEYCODE_FOCUS           = 80,   // *Camera* focus
+    /** Camera Focus key.
+     * Used to focus the camera. */
+    AKEYCODE_FOCUS           = 80,
+    /** '+' key. */
     AKEYCODE_PLUS            = 81,
+    /** Menu key. */
     AKEYCODE_MENU            = 82,
+    /** Notification key. */
     AKEYCODE_NOTIFICATION    = 83,
+    /** Search key. */
     AKEYCODE_SEARCH          = 84,
+    /** Play/Pause media key. */
     AKEYCODE_MEDIA_PLAY_PAUSE= 85,
+    /** Stop media key. */
     AKEYCODE_MEDIA_STOP      = 86,
+    /** Play Next media key. */
     AKEYCODE_MEDIA_NEXT      = 87,
+    /** Play Previous media key. */
     AKEYCODE_MEDIA_PREVIOUS  = 88,
+    /** Rewind media key. */
     AKEYCODE_MEDIA_REWIND    = 89,
+    /** Fast Forward media key. */
     AKEYCODE_MEDIA_FAST_FORWARD = 90,
+    /** Mute key.
+     * Mutes the microphone, unlike {@link AKEYCODE_VOLUME_MUTE}. */
     AKEYCODE_MUTE            = 91,
+    /** Page Up key. */
     AKEYCODE_PAGE_UP         = 92,
+    /** Page Down key. */
     AKEYCODE_PAGE_DOWN       = 93,
+    /** Picture Symbols modifier key.
+     * Used to switch symbol sets (Emoji, Kao-moji). */
     AKEYCODE_PICTSYMBOLS     = 94,
+    /** Switch Charset modifier key.
+     * Used to switch character sets (Kanji, Katakana). */
     AKEYCODE_SWITCH_CHARSET  = 95,
+    /** A Button key.
+     * On a game controller, the A button should be either the button labeled A
+     * or the first button on the bottom row of controller buttons. */
     AKEYCODE_BUTTON_A        = 96,
+    /** B Button key.
+     * On a game controller, the B button should be either the button labeled B
+     * or the second button on the bottom row of controller buttons. */
     AKEYCODE_BUTTON_B        = 97,
+    /** C Button key.
+     * On a game controller, the C button should be either the button labeled C
+     * or the third button on the bottom row of controller buttons. */
     AKEYCODE_BUTTON_C        = 98,
+    /** X Button key.
+     * On a game controller, the X button should be either the button labeled X
+     * or the first button on the upper row of controller buttons. */
     AKEYCODE_BUTTON_X        = 99,
+    /** Y Button key.
+     * On a game controller, the Y button should be either the button labeled Y
+     * or the second button on the upper row of controller buttons. */
     AKEYCODE_BUTTON_Y        = 100,
+    /** Z Button key.
+     * On a game controller, the Z button should be either the button labeled Z
+     * or the third button on the upper row of controller buttons. */
     AKEYCODE_BUTTON_Z        = 101,
+    /** L1 Button key.
+     * On a game controller, the L1 button should be either the button labeled L1 (or L)
+     * or the top left trigger button. */
     AKEYCODE_BUTTON_L1       = 102,
+    /** R1 Button key.
+     * On a game controller, the R1 button should be either the button labeled R1 (or R)
+     * or the top right trigger button. */
     AKEYCODE_BUTTON_R1       = 103,
+    /** L2 Button key.
+     * On a game controller, the L2 button should be either the button labeled L2
+     * or the bottom left trigger button. */
     AKEYCODE_BUTTON_L2       = 104,
+    /** R2 Button key.
+     * On a game controller, the R2 button should be either the button labeled R2
+     * or the bottom right trigger button. */
     AKEYCODE_BUTTON_R2       = 105,
+    /** Left Thumb Button key.
+     * On a game controller, the left thumb button indicates that the left (or only)
+     * joystick is pressed. */
     AKEYCODE_BUTTON_THUMBL   = 106,
+    /** Right Thumb Button key.
+     * On a game controller, the right thumb button indicates that the right
+     * joystick is pressed. */
     AKEYCODE_BUTTON_THUMBR   = 107,
+    /** Start Button key.
+     * On a game controller, the button labeled Start. */
     AKEYCODE_BUTTON_START    = 108,
+    /** Select Button key.
+     * On a game controller, the button labeled Select. */
     AKEYCODE_BUTTON_SELECT   = 109,
+    /** Mode Button key.
+     * On a game controller, the button labeled Mode. */
     AKEYCODE_BUTTON_MODE     = 110,
+    /** Escape key. */
     AKEYCODE_ESCAPE          = 111,
+    /** Forward Delete key.
+     * Deletes characters ahead of the insertion point, unlike {@link AKEYCODE_DEL}. */
     AKEYCODE_FORWARD_DEL     = 112,
+    /** Left Control modifier key. */
     AKEYCODE_CTRL_LEFT       = 113,
+    /** Right Control modifier key. */
     AKEYCODE_CTRL_RIGHT      = 114,
+    /** Caps Lock key. */
     AKEYCODE_CAPS_LOCK       = 115,
+    /** Scroll Lock key. */
     AKEYCODE_SCROLL_LOCK     = 116,
+    /** Left Meta modifier key. */
     AKEYCODE_META_LEFT       = 117,
+    /** Right Meta modifier key. */
     AKEYCODE_META_RIGHT      = 118,
+    /** Function modifier key. */
     AKEYCODE_FUNCTION        = 119,
+    /** System Request / Print Screen key. */
     AKEYCODE_SYSRQ           = 120,
+    /** Break / Pause key. */
     AKEYCODE_BREAK           = 121,
+    /** Home Movement key.
+     * Used for scrolling or moving the cursor around to the start of a line
+     * or to the top of a list. */
     AKEYCODE_MOVE_HOME       = 122,
+    /** End Movement key.
+     * Used for scrolling or moving the cursor around to the end of a line
+     * or to the bottom of a list. */
     AKEYCODE_MOVE_END        = 123,
+    /** Insert key.
+     * Toggles insert / overwrite edit mode. */
     AKEYCODE_INSERT          = 124,
+    /** Forward key.
+     * Navigates forward in the history stack.  Complement of {@link AKEYCODE_BACK}. */
     AKEYCODE_FORWARD         = 125,
+    /** Play media key. */
     AKEYCODE_MEDIA_PLAY      = 126,
+    /** Pause media key. */
     AKEYCODE_MEDIA_PAUSE     = 127,
+    /** Close media key.
+     * May be used to close a CD tray, for example. */
     AKEYCODE_MEDIA_CLOSE     = 128,
+    /** Eject media key.
+     * May be used to eject a CD tray, for example. */
     AKEYCODE_MEDIA_EJECT     = 129,
+    /** Record media key. */
     AKEYCODE_MEDIA_RECORD    = 130,
+    /** F1 key. */
     AKEYCODE_F1              = 131,
+    /** F2 key. */
     AKEYCODE_F2              = 132,
+    /** F3 key. */
     AKEYCODE_F3              = 133,
+    /** F4 key. */
     AKEYCODE_F4              = 134,
+    /** F5 key. */
     AKEYCODE_F5              = 135,
+    /** F6 key. */
     AKEYCODE_F6              = 136,
+    /** F7 key. */
     AKEYCODE_F7              = 137,
+    /** F8 key. */
     AKEYCODE_F8              = 138,
+    /** F9 key. */
     AKEYCODE_F9              = 139,
+    /** F10 key. */
     AKEYCODE_F10             = 140,
+    /** F11 key. */
     AKEYCODE_F11             = 141,
+    /** F12 key. */
     AKEYCODE_F12             = 142,
+    /** Num Lock key.
+     * This is the Num Lock key; it is different from {@link AKEYCODE_NUM}.
+     * This key alters the behavior of other keys on the numeric keypad. */
     AKEYCODE_NUM_LOCK        = 143,
+    /** Numeric keypad '0' key. */
     AKEYCODE_NUMPAD_0        = 144,
+    /** Numeric keypad '1' key. */
     AKEYCODE_NUMPAD_1        = 145,
+    /** Numeric keypad '2' key. */
     AKEYCODE_NUMPAD_2        = 146,
+    /** Numeric keypad '3' key. */
     AKEYCODE_NUMPAD_3        = 147,
+    /** Numeric keypad '4' key. */
     AKEYCODE_NUMPAD_4        = 148,
+    /** Numeric keypad '5' key. */
     AKEYCODE_NUMPAD_5        = 149,
+    /** Numeric keypad '6' key. */
     AKEYCODE_NUMPAD_6        = 150,
+    /** Numeric keypad '7' key. */
     AKEYCODE_NUMPAD_7        = 151,
+    /** Numeric keypad '8' key. */
     AKEYCODE_NUMPAD_8        = 152,
+    /** Numeric keypad '9' key. */
     AKEYCODE_NUMPAD_9        = 153,
+    /** Numeric keypad '/' key (for division). */
     AKEYCODE_NUMPAD_DIVIDE   = 154,
+    /** Numeric keypad '*' key (for multiplication). */
     AKEYCODE_NUMPAD_MULTIPLY = 155,
+    /** Numeric keypad '-' key (for subtraction). */
     AKEYCODE_NUMPAD_SUBTRACT = 156,
+    /** Numeric keypad '+' key (for addition). */
     AKEYCODE_NUMPAD_ADD      = 157,
+    /** Numeric keypad '.' key (for decimals or digit grouping). */
     AKEYCODE_NUMPAD_DOT      = 158,
+    /** Numeric keypad ',' key (for decimals or digit grouping). */
     AKEYCODE_NUMPAD_COMMA    = 159,
+    /** Numeric keypad Enter key. */
     AKEYCODE_NUMPAD_ENTER    = 160,
+    /** Numeric keypad '=' key. */
     AKEYCODE_NUMPAD_EQUALS   = 161,
+    /** Numeric keypad '(' key. */
     AKEYCODE_NUMPAD_LEFT_PAREN = 162,
+    /** Numeric keypad ')' key. */
     AKEYCODE_NUMPAD_RIGHT_PAREN = 163,
+    /** Volume Mute key.
+     * Mutes the speaker, unlike {@link AKEYCODE_MUTE}.
+     * This key should normally be implemented as a toggle such that the first press
+     * mutes the speaker and the second press restores the original volume. */
     AKEYCODE_VOLUME_MUTE     = 164,
+    /** Info key.
+     * Common on TV remotes to show additional information related to what is
+     * currently being viewed. */
     AKEYCODE_INFO            = 165,
+    /** Channel up key.
+     * On TV remotes, increments the television channel. */
     AKEYCODE_CHANNEL_UP      = 166,
+    /** Channel down key.
+     * On TV remotes, decrements the television channel. */
     AKEYCODE_CHANNEL_DOWN    = 167,
+    /** Zoom in key. */
     AKEYCODE_ZOOM_IN         = 168,
+    /** Zoom out key. */
     AKEYCODE_ZOOM_OUT        = 169,
+    /** TV key.
+     * On TV remotes, switches to viewing live TV. */
     AKEYCODE_TV              = 170,
+    /** Window key.
+     * On TV remotes, toggles picture-in-picture mode or other windowing functions. */
     AKEYCODE_WINDOW          = 171,
+    /** Guide key.
+     * On TV remotes, shows a programming guide. */
     AKEYCODE_GUIDE           = 172,
+    /** DVR key.
+     * On some TV remotes, switches to a DVR mode for recorded shows. */
     AKEYCODE_DVR             = 173,
+    /** Bookmark key.
+     * On some TV remotes, bookmarks content or web pages. */
     AKEYCODE_BOOKMARK        = 174,
+    /** Toggle captions key.
+     * Switches the mode for closed-captioning text, for example during television shows. */
     AKEYCODE_CAPTIONS        = 175,
+    /** Settings key.
+     * Starts the system settings activity. */
     AKEYCODE_SETTINGS        = 176,
+    /** TV power key.
+     * On TV remotes, toggles the power on a television screen. */
     AKEYCODE_TV_POWER        = 177,
+    /** TV input key.
+     * On TV remotes, switches the input on a television screen. */
     AKEYCODE_TV_INPUT        = 178,
+    /** Set-top-box power key.
+     * On TV remotes, toggles the power on an external Set-top-box. */
     AKEYCODE_STB_POWER       = 179,
+    /** Set-top-box input key.
+     * On TV remotes, switches the input mode on an external Set-top-box. */
     AKEYCODE_STB_INPUT       = 180,
+    /** A/V Receiver power key.
+     * On TV remotes, toggles the power on an external A/V Receiver. */
     AKEYCODE_AVR_POWER       = 181,
+    /** A/V Receiver input key.
+     * On TV remotes, switches the input mode on an external A/V Receiver. */
     AKEYCODE_AVR_INPUT       = 182,
+    /** Red "programmable" key.
+     * On TV remotes, acts as a contextual/programmable key. */
     AKEYCODE_PROG_RED        = 183,
+    /** Green "programmable" key.
+     * On TV remotes, actsas a contextual/programmable key. */
     AKEYCODE_PROG_GREEN      = 184,
+    /** Yellow "programmable" key.
+     * On TV remotes, acts as a contextual/programmable key. */
     AKEYCODE_PROG_YELLOW     = 185,
+    /** Blue "programmable" key.
+     * On TV remotes, acts as a contextual/programmable key. */
     AKEYCODE_PROG_BLUE       = 186,
+    /** App switch key.
+     * Should bring up the application switcher dialog. */
     AKEYCODE_APP_SWITCH      = 187,
+    /** Generic Game Pad Button #1.*/
     AKEYCODE_BUTTON_1        = 188,
+    /** Generic Game Pad Button #2.*/
     AKEYCODE_BUTTON_2        = 189,
+    /** Generic Game Pad Button #3.*/
     AKEYCODE_BUTTON_3        = 190,
+    /** Generic Game Pad Button #4.*/
     AKEYCODE_BUTTON_4        = 191,
+    /** Generic Game Pad Button #5.*/
     AKEYCODE_BUTTON_5        = 192,
+    /** Generic Game Pad Button #6.*/
     AKEYCODE_BUTTON_6        = 193,
+    /** Generic Game Pad Button #7.*/
     AKEYCODE_BUTTON_7        = 194,
+    /** Generic Game Pad Button #8.*/
     AKEYCODE_BUTTON_8        = 195,
+    /** Generic Game Pad Button #9.*/
     AKEYCODE_BUTTON_9        = 196,
+    /** Generic Game Pad Button #10.*/
     AKEYCODE_BUTTON_10       = 197,
+    /** Generic Game Pad Button #11.*/
     AKEYCODE_BUTTON_11       = 198,
+    /** Generic Game Pad Button #12.*/
     AKEYCODE_BUTTON_12       = 199,
+    /** Generic Game Pad Button #13.*/
     AKEYCODE_BUTTON_13       = 200,
+    /** Generic Game Pad Button #14.*/
     AKEYCODE_BUTTON_14       = 201,
+    /** Generic Game Pad Button #15.*/
     AKEYCODE_BUTTON_15       = 202,
+    /** Generic Game Pad Button #16.*/
     AKEYCODE_BUTTON_16       = 203,
+    /** Language Switch key.
+     * Toggles the current input language such as switching between English and Japanese on
+     * a QWERTY keyboard.  On some devices, the same function may be performed by
+     * pressing Shift+Spacebar. */
     AKEYCODE_LANGUAGE_SWITCH = 204,
+    /** Manner Mode key.
+     * Toggles silent or vibrate mode on and off to make the device behave more politely
+     * in certain settings such as on a crowded train.  On some devices, the key may only
+     * operate when long-pressed. */
     AKEYCODE_MANNER_MODE     = 205,
+    /** 3D Mode key.
+     * Toggles the display between 2D and 3D mode. */
     AKEYCODE_3D_MODE         = 206,
+    /** Contacts special function key.
+     * Used to launch an address book application. */
     AKEYCODE_CONTACTS        = 207,
+    /** Calendar special function key.
+     * Used to launch a calendar application. */
     AKEYCODE_CALENDAR        = 208,
+    /** Music special function key.
+     * Used to launch a music player application. */
     AKEYCODE_MUSIC           = 209,
+    /** Calculator special function key.
+     * Used to launch a calculator application. */
     AKEYCODE_CALCULATOR      = 210,
+    /** Japanese full-width / half-width key. */
     AKEYCODE_ZENKAKU_HANKAKU = 211,
+    /** Japanese alphanumeric key. */
     AKEYCODE_EISU            = 212,
+    /** Japanese non-conversion key. */
     AKEYCODE_MUHENKAN        = 213,
+    /** Japanese conversion key. */
     AKEYCODE_HENKAN          = 214,
+    /** Japanese katakana / hiragana key. */
     AKEYCODE_KATAKANA_HIRAGANA = 215,
+    /** Japanese Yen key. */
     AKEYCODE_YEN             = 216,
+    /** Japanese Ro key. */
     AKEYCODE_RO              = 217,
+    /** Japanese kana key. */
     AKEYCODE_KANA            = 218,
+    /** Assist key.
+     * Launches the global assist activity.  Not delivered to applications. */
     AKEYCODE_ASSIST          = 219,
+    /** Brightness Down key.
+     * Adjusts the screen brightness down. */
     AKEYCODE_BRIGHTNESS_DOWN = 220,
+    /** Brightness Up key.
+     * Adjusts the screen brightness up. */
     AKEYCODE_BRIGHTNESS_UP   = 221,
+    /** Audio Track key.
+     * Switches the audio tracks. */
     AKEYCODE_MEDIA_AUDIO_TRACK = 222,
+    /** Sleep key.
+     * Puts the device to sleep.  Behaves somewhat like {@link AKEYCODE_POWER} but it
+     * has no effect if the device is already asleep. */
     AKEYCODE_SLEEP           = 223,
+    /** Wakeup key.
+     * Wakes up the device.  Behaves somewhat like {@link AKEYCODE_POWER} but it
+     * has no effect if the device is already awake. */
     AKEYCODE_WAKEUP          = 224,
+    /** Pairing key.
+     * Initiates peripheral pairing mode. Useful for pairing remote control
+     * devices or game controllers, especially if no other input mode is
+     * available. */
     AKEYCODE_PAIRING         = 225,
+    /** Media Top Menu key.
+     * Goes to the top of media menu. */
     AKEYCODE_MEDIA_TOP_MENU  = 226,
+    /** '11' key. */
     AKEYCODE_11              = 227,
+    /** '12' key. */
     AKEYCODE_12              = 228,
+    /** Last Channel key.
+     * Goes to the last viewed channel. */
     AKEYCODE_LAST_CHANNEL    = 229,
+    /** TV data service key.
+     * Displays data services like weather, sports. */
     AKEYCODE_TV_DATA_SERVICE = 230,
+    /** Voice Assist key.
+     * Launches the global voice assist activity. Not delivered to applications. */
     AKEYCODE_VOICE_ASSIST    = 231,
+    /** Radio key.
+     * Toggles TV service / Radio service. */
     AKEYCODE_TV_RADIO_SERVICE = 232,
+    /** Teletext key.
+     * Displays Teletext service. */
     AKEYCODE_TV_TELETEXT     = 233,
+    /** Number entry key.
+     * Initiates to enter multi-digit channel nubmber when each digit key is assigned
+     * for selecting separate channel. Corresponds to Number Entry Mode (0x1D) of CEC
+     * User Control Code. */
     AKEYCODE_TV_NUMBER_ENTRY = 234,
+    /** Analog Terrestrial key.
+     * Switches to analog terrestrial broadcast service. */
     AKEYCODE_TV_TERRESTRIAL_ANALOG = 235,
+    /** Digital Terrestrial key.
+     * Switches to digital terrestrial broadcast service. */
     AKEYCODE_TV_TERRESTRIAL_DIGITAL = 236,
+    /** Satellite key.
+     * Switches to digital satellite broadcast service. */
     AKEYCODE_TV_SATELLITE    = 237,
+    /** BS key.
+     * Switches to BS digital satellite broadcasting service available in Japan. */
     AKEYCODE_TV_SATELLITE_BS = 238,
+    /** CS key.
+     * Switches to CS digital satellite broadcasting service available in Japan. */
     AKEYCODE_TV_SATELLITE_CS = 239,
+    /** BS/CS key.
+     * Toggles between BS and CS digital satellite services. */
     AKEYCODE_TV_SATELLITE_SERVICE = 240,
+    /** Toggle Network key.
+     * Toggles selecting broacast services. */
     AKEYCODE_TV_NETWORK      = 241,
+    /** Antenna/Cable key.
+     * Toggles broadcast input source between antenna and cable. */
     AKEYCODE_TV_ANTENNA_CABLE = 242,
+    /** HDMI #1 key.
+     * Switches to HDMI input #1. */
     AKEYCODE_TV_INPUT_HDMI_1 = 243,
+    /** HDMI #2 key.
+     * Switches to HDMI input #2. */
     AKEYCODE_TV_INPUT_HDMI_2 = 244,
+    /** HDMI #3 key.
+     * Switches to HDMI input #3. */
     AKEYCODE_TV_INPUT_HDMI_3 = 245,
+    /** HDMI #4 key.
+     * Switches to HDMI input #4. */
     AKEYCODE_TV_INPUT_HDMI_4 = 246,
+    /** Composite #1 key.
+     * Switches to composite video input #1. */
     AKEYCODE_TV_INPUT_COMPOSITE_1 = 247,
+    /** Composite #2 key.
+     * Switches to composite video input #2. */
     AKEYCODE_TV_INPUT_COMPOSITE_2 = 248,
+    /** Component #1 key.
+     * Switches to component video input #1. */
     AKEYCODE_TV_INPUT_COMPONENT_1 = 249,
+    /** Component #2 key.
+     * Switches to component video input #2. */
     AKEYCODE_TV_INPUT_COMPONENT_2 = 250,
+    /** VGA #1 key.
+     * Switches to VGA (analog RGB) input #1. */
     AKEYCODE_TV_INPUT_VGA_1  = 251,
+    /** Audio description key.
+     * Toggles audio description off / on. */
     AKEYCODE_TV_AUDIO_DESCRIPTION = 252,
+    /** Audio description mixing volume up key.
+     * Louden audio description volume as compared with normal audio volume. */
     AKEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP = 253,
+    /** Audio description mixing volume down key.
+     * Lessen audio description volume as compared with normal audio volume. */
     AKEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN = 254,
+    /** Zoom mode key.
+     * Changes Zoom mode (Normal, Full, Zoom, Wide-zoom, etc.) */
     AKEYCODE_TV_ZOOM_MODE    = 255,
+    /** Contents menu key.
+     * Goes to the title list. Corresponds to Contents Menu (0x0B) of CEC User Control
+     * Code */
     AKEYCODE_TV_CONTENTS_MENU = 256,
+    /** Media context menu key.
+     * Goes to the context menu of media contents. Corresponds to Media Context-sensitive
+     * Menu (0x11) of CEC User Control Code. */
     AKEYCODE_TV_MEDIA_CONTEXT_MENU = 257,
+    /** Timer programming key.
+     * Goes to the timer recording menu. Corresponds to Timer Programming (0x54) of
+     * CEC User Control Code. */
     AKEYCODE_TV_TIMER_PROGRAMMING = 258,
+    /** Help key. */
     AKEYCODE_HELP            = 259
 
     // NOTE: If you add a new keycode here you must also add it to several other files.
@@ -313,3 +729,5 @@
 #endif
 
 #endif // _ANDROID_KEYCODES_H
+
+/** @} */
diff --git a/include/android/looper.h b/include/android/looper.h
index 74c0383..718f703 100644
--- a/include/android/looper.h
+++ b/include/android/looper.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Looper
+ * @{
+ */
+
+/**
+ * @file looper.h
+ */
 
 #ifndef ANDROID_LOOPER_H
 #define ANDROID_LOOPER_H
@@ -22,6 +30,7 @@
 extern "C" {
 #endif
 
+struct ALooper;
 /**
  * ALooper
  *
@@ -35,7 +44,6 @@
  *
  * A thread can have only one ALooper associated with it.
  */
-struct ALooper;
 typedef struct ALooper ALooper;
 
 /**
@@ -44,13 +52,14 @@
  */
 ALooper* ALooper_forThread();
 
+/** Option for for ALooper_prepare(). */
 enum {
     /**
-     * Option for ALooper_prepare: this looper will accept calls to
-     * ALooper_addFd() that do not have a callback (that is provide NULL
-     * for the callback).  In this case the caller of ALooper_pollOnce()
-     * or ALooper_pollAll() MUST check the return from these functions to
-     * discover when data is available on such fds and process it.
+     * This looper will accept calls to ALooper_addFd() that do not
+     * have a callback (that is provide NULL for the callback).  In
+     * this case the caller of ALooper_pollOnce() or ALooper_pollAll()
+     * MUST check the return from these functions to discover when
+     * data is available on such fds and process it.
      */
     ALOOPER_PREPARE_ALLOW_NON_CALLBACKS = 1<<0
 };
@@ -64,9 +73,9 @@
  */
 ALooper* ALooper_prepare(int opts);
 
+/** Result from ALooper_pollOnce() and ALooper_pollAll(). */
 enum {
     /**
-     * Result from ALooper_pollOnce() and ALooper_pollAll():
      * The poll was awoken using wake() before the timeout expired
      * and no callbacks were executed and no other file descriptors were ready.
      */
@@ -176,10 +185,12 @@
  *
  * Returns ALOOPER_POLL_ERROR if an error occurred.
  *
- * Returns a value >= 0 containing an identifier if its file descriptor has data
- * and it has no callback function (requiring the caller here to handle it).
- * In this (and only this) case outFd, outEvents and outData will contain the poll
- * events and data associated with the fd, otherwise they will be set to NULL.
+ * Returns a value >= 0 containing an identifier (the same identifier
+ * `ident` passed to ALooper_addFd()) if its file descriptor has data
+ * and it has no callback function (requiring the caller here to
+ * handle it).  In this (and only this) case outFd, outEvents and
+ * outData will contain the poll events and data associated with the
+ * fd, otherwise they will be set to NULL.
  *
  * This method does not return until it has finished invoking the appropriate callbacks
  * for all file descriptors that were signalled.
@@ -254,3 +265,5 @@
 #endif
 
 #endif // ANDROID_LOOPER_H
+
+/** @} */
diff --git a/include/android/native_activity.h b/include/android/native_activity.h
index bc70f88..d3d99cf 100644
--- a/include/android/native_activity.h
+++ b/include/android/native_activity.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file native_activity.h
+ */
 
 #ifndef ANDROID_NATIVE_ACTIVITY_H
 #define ANDROID_NATIVE_ACTIVITY_H
@@ -31,6 +39,9 @@
 extern "C" {
 #endif
 
+/**
+ * {@link ANativeActivityCallbacks}
+ */
 struct ANativeActivityCallbacks;
 
 /**
@@ -75,17 +86,17 @@
      * Path to this application's internal data directory.
      */
     const char* internalDataPath;
-    
+
     /**
      * Path to this application's external (removable/mountable) data directory.
      */
     const char* externalDataPath;
-    
+
     /**
      * The platform's SDK version code.
      */
     int32_t sdkVersion;
-    
+
     /**
      * This is the native instance of the application.  It is not used by
      * the framework, but can be set by the application to its own instance
@@ -119,13 +130,13 @@
      * for more information.
      */
     void (*onStart)(ANativeActivity* activity);
-    
+
     /**
      * NativeActivity has resumed.  See Java documentation for Activity.onResume()
      * for more information.
      */
     void (*onResume)(ANativeActivity* activity);
-    
+
     /**
      * Framework is asking NativeActivity to save its current instance state.
      * See Java documentation for Activity.onSaveInstanceState() for more
@@ -136,19 +147,19 @@
      * entities (pointers to memory, file descriptors, etc).
      */
     void* (*onSaveInstanceState)(ANativeActivity* activity, size_t* outSize);
-    
+
     /**
      * NativeActivity has paused.  See Java documentation for Activity.onPause()
      * for more information.
      */
     void (*onPause)(ANativeActivity* activity);
-    
+
     /**
      * NativeActivity has stopped.  See Java documentation for Activity.onStop()
      * for more information.
      */
     void (*onStop)(ANativeActivity* activity);
-    
+
     /**
      * NativeActivity is being destroyed.  See Java documentation for Activity.onDestroy()
      * for more information.
@@ -160,7 +171,7 @@
      * for example, to pause a game when it loses input focus.
      */
     void (*onWindowFocusChanged)(ANativeActivity* activity, int hasFocus);
-    
+
     /**
      * The drawing window for this native activity has been created.  You
      * can use the given native window object to start drawing.
@@ -191,13 +202,13 @@
      * returning from here.
      */
     void (*onNativeWindowDestroyed)(ANativeActivity* activity, ANativeWindow* window);
-    
+
     /**
      * The input queue for this native activity's window has been created.
      * You can use the given input queue to start retrieving input events.
      */
     void (*onInputQueueCreated)(ANativeActivity* activity, AInputQueue* queue);
-    
+
     /**
      * The input queue for this native activity's window is being destroyed.
      * You should no longer try to reference this object upon returning from this
@@ -273,7 +284,17 @@
  * API for documentation.
  */
 enum {
+    /**
+     * Implicit request to show the input window, not as the result
+     * of a direct request by the user.
+     */
     ANATIVEACTIVITY_SHOW_SOFT_INPUT_IMPLICIT = 0x0001,
+
+    /**
+     * The user has forced the input method open (such as by
+     * long-pressing menu) so it should not be closed until they
+     * explicitly do so.
+     */
     ANATIVEACTIVITY_SHOW_SOFT_INPUT_FORCED = 0x0002,
 };
 
@@ -290,7 +311,15 @@
  * API for documentation.
  */
 enum {
+    /**
+     * The soft input window should only be hidden if it was not
+     * explicitly shown by the user.
+     */
     ANATIVEACTIVITY_HIDE_SOFT_INPUT_IMPLICIT_ONLY = 0x0001,
+    /**
+     * The soft input window should normally be hidden, unless it was
+     * originally shown with {@link ANATIVEACTIVITY_SHOW_SOFT_INPUT_FORCED}.
+     */
     ANATIVEACTIVITY_HIDE_SOFT_INPUT_NOT_ALWAYS = 0x0002,
 };
 
@@ -308,3 +337,4 @@
 
 #endif // ANDROID_NATIVE_ACTIVITY_H
 
+/** @} */
diff --git a/include/android/native_window.h b/include/android/native_window.h
index 2f4f2d3..cf07f1a 100644
--- a/include/android/native_window.h
+++ b/include/android/native_window.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file native_window.h
+ */
+
 #ifndef ANDROID_NATIVE_WINDOW_H
 #define ANDROID_NATIVE_WINDOW_H
 
@@ -23,18 +32,31 @@
 extern "C" {
 #endif
 
-/*
+/**
  * Pixel formats that a window can use.
  */
 enum {
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Alpha: 8 bits. **/
     WINDOW_FORMAT_RGBA_8888          = 1,
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Unused: 8 bits. **/
     WINDOW_FORMAT_RGBX_8888          = 2,
+    /** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
     WINDOW_FORMAT_RGB_565            = 4,
 };
 
 struct ANativeWindow;
+/**
+ * {@link ANativeWindow} is opaque type that provides access to a native window.
+ *
+ * A pointer can be obtained using ANativeWindow_fromSurface().
+ */
 typedef struct ANativeWindow ANativeWindow;
 
+/**
+ * {@link ANativeWindow} is a struct that represents a windows buffer.
+ *
+ * A pointer can be obtained using ANativeWindow_lock().
+ */
 typedef struct ANativeWindow_Buffer {
     // The number of pixels that are show horizontally.
     int32_t width;
@@ -51,7 +73,7 @@
 
     // The actual bits.
     void* bits;
-    
+
     // Do not touch.
     uint32_t reserved[6];
 } ANativeWindow_Buffer;
@@ -67,25 +89,25 @@
  */
 void ANativeWindow_release(ANativeWindow* window);
 
-/*
+/**
  * Return the current width in pixels of the window surface.  Returns a
  * negative value on error.
  */
 int32_t ANativeWindow_getWidth(ANativeWindow* window);
 
-/*
+/**
  * Return the current height in pixels of the window surface.  Returns a
  * negative value on error.
  */
 int32_t ANativeWindow_getHeight(ANativeWindow* window);
 
-/*
+/**
  * Return the current pixel format of the window surface.  Returns a
  * negative value on error.
  */
 int32_t ANativeWindow_getFormat(ANativeWindow* window);
 
-/*
+/**
  * Change the format and size of the window buffers.
  *
  * The width and height control the number of pixels in the buffers, not the
@@ -124,3 +146,5 @@
 #endif
 
 #endif // ANDROID_NATIVE_WINDOW_H
+
+/** @} */
diff --git a/include/android/native_window_jni.h b/include/android/native_window_jni.h
index b9e72ef..60a36c3 100644
--- a/include/android/native_window_jni.h
+++ b/include/android/native_window_jni.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file native_window_jni.h
+ */
+
 #ifndef ANDROID_NATIVE_WINDOW_JNI_H
 #define ANDROID_NATIVE_WINDOW_JNI_H
 
@@ -38,3 +47,5 @@
 #endif
 
 #endif // ANDROID_NATIVE_WINDOW_H
+
+/** @} */
diff --git a/include/android/obb.h b/include/android/obb.h
index 65e9b2a..4c6d9d7 100644
--- a/include/android/obb.h
+++ b/include/android/obb.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Storage
+ * @{
+ */
+
+/**
+ * @file obb.h
+ */
 
 #ifndef ANDROID_OBB_H
 #define ANDROID_OBB_H
@@ -25,9 +33,12 @@
 #endif
 
 struct AObbInfo;
+/** {@link AObbInfo} is an opaque type representing information for obb storage. */
 typedef struct AObbInfo AObbInfo;
 
+/** Flag for an obb file, returned by AObbInfo_getFlags(). */
 enum {
+    /** overlay */
     AOBBINFO_OVERLAY = 0x0001,
 };
 
@@ -61,3 +72,5 @@
 #endif
 
 #endif      // ANDROID_OBB_H
+
+/** @} */
diff --git a/include/android/rect.h b/include/android/rect.h
index bcd42a9..80741c0 100644
--- a/include/android/rect.h
+++ b/include/android/rect.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file rect.h
+ */
 
 #ifndef ANDROID_RECT_H
 #define ANDROID_RECT_H
@@ -24,13 +32,24 @@
 extern "C" {
 #endif
 
+/**
+ * {@link ARect} is a struct that represents a rectangular window area.
+ *
+ * It is used with {@link
+ * ANativeActivityCallbacks::onContentRectChanged} event callback and
+ * ANativeWindow_lock() function.
+ */
 typedef struct ARect {
 #ifdef __cplusplus
     typedef int32_t value_type;
 #endif
+    /** left position */
     int32_t left;
+    /** top position */
     int32_t top;
+    /** left position */
     int32_t right;
+    /** bottom position */
     int32_t bottom;
 } ARect;
 
@@ -39,3 +58,5 @@
 #endif
 
 #endif // ANDROID_RECT_H
+
+/** @} */
diff --git a/include/android/sensor.h b/include/android/sensor.h
index d58c460..4600dad 100644
--- a/include/android/sensor.h
+++ b/include/android/sensor.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Sensor
+ * @{
+ */
+
+/**
+ * @file sensor.h
+ */
 
 #ifndef ANDROID_SENSOR_H
 #define ANDROID_SENSOR_H
@@ -34,7 +42,7 @@
  *   - DO NOT CHANGE THE LAYOUT OR SIZE OF STRUCTURES
  */
 
-/*
+/**
  * Structures and functions to receive and process sensor events in
  * native code.
  *
@@ -49,37 +57,82 @@
 #endif
 
 
-/*
- * Sensor types
+/**
+ * Sensor types.
  * (keep in sync with hardware/sensor.h)
  */
-
 enum {
+    /**
+     * {@link ASENSOR_TYPE_ACCELEROMETER}
+     * reporting-mode: continuous
+     *
+     *  All values are in SI units (m/s^2) and measure the acceleration of the
+     *  device minus the force of gravity.
+     */
     ASENSOR_TYPE_ACCELEROMETER      = 1,
+    /**
+     * {@link ASENSOR_TYPE_MAGNETIC_FIELD}
+     * reporting-mode: continuous
+     *
+     *  All values are in micro-Tesla (uT) and measure the geomagnetic
+     *  field in the X, Y and Z axis.
+     */
     ASENSOR_TYPE_MAGNETIC_FIELD     = 2,
+    /**
+     * {@link ASENSOR_TYPE_GYROSCOPE}
+     * reporting-mode: continuous
+     *
+     *  All values are in radians/second and measure the rate of rotation
+     *  around the X, Y and Z axis.
+     */
     ASENSOR_TYPE_GYROSCOPE          = 4,
+    /**
+     * {@link ASENSOR_TYPE_LIGHT}
+     * reporting-mode: on-change
+     *
+     * The light sensor value is returned in SI lux units.
+     */
     ASENSOR_TYPE_LIGHT              = 5,
+    /**
+     * {@link ASENSOR_TYPE_PROXIMITY}
+     * reporting-mode: on-change
+     *
+     * The proximity sensor which turns the screen off and back on during calls is the
+     * wake-up proximity sensor. Implement wake-up proximity sensor before implementing
+     * a non wake-up proximity sensor. For the wake-up proximity sensor set the flag
+     * SENSOR_FLAG_WAKE_UP.
+     * The value corresponds to the distance to the nearest object in centimeters.
+     */
     ASENSOR_TYPE_PROXIMITY          = 8
 };
 
-/*
- * Sensor accuracy measure
+/**
+ * Sensor accuracy measure.
  */
 enum {
+    /** no contact */
     ASENSOR_STATUS_NO_CONTACT       = -1,
+    /** unreliable */
     ASENSOR_STATUS_UNRELIABLE       = 0,
+    /** low accuracy */
     ASENSOR_STATUS_ACCURACY_LOW     = 1,
+    /** medium accuracy */
     ASENSOR_STATUS_ACCURACY_MEDIUM  = 2,
+    /** high accuracy */
     ASENSOR_STATUS_ACCURACY_HIGH    = 3
 };
 
-/*
+/**
  * Sensor Reporting Modes.
  */
 enum {
+    /** continuous reporting */
     AREPORTING_MODE_CONTINUOUS = 0,
+    /** reporting on change */
     AREPORTING_MODE_ON_CHANGE = 1,
+    /** on shot reporting */
     AREPORTING_MODE_ONE_SHOT = 2,
+    /** special trigger reporting */
     AREPORTING_MODE_SPECIAL_TRIGGER = 3
 };
 
@@ -87,14 +140,14 @@
  * A few useful constants
  */
 
-/* Earth's gravity in m/s^2 */
+/** Earth's gravity in m/s^2 */
 #define ASENSOR_STANDARD_GRAVITY            (9.80665f)
-/* Maximum magnetic field on Earth's surface in uT */
+/** Maximum magnetic field on Earth's surface in uT */
 #define ASENSOR_MAGNETIC_FIELD_EARTH_MAX    (60.0f)
-/* Minimum magnetic field on Earth's surface in uT*/
+/** Minimum magnetic field on Earth's surface in uT*/
 #define ASENSOR_MAGNETIC_FIELD_EARTH_MIN    (30.0f)
 
-/*
+/**
  * A sensor event.
  */
 
@@ -180,19 +233,82 @@
 } ASensorEvent;
 
 struct ASensorManager;
+/**
+ * {@link ASensorManager} is an opaque type to manage sensors and
+ * events queues.
+ *
+ * {@link ASensorManager} is a singleton that can be obtained using
+ * ASensorManager_getInstance().
+ *
+ * This file provides a set of functions that uses {@link
+ * ASensorManager} to access and list hardware sensors, and
+ * create and destroy event queues:
+ * - ASensorManager_getSensorList()
+ * - ASensorManager_getDefaultSensor()
+ * - ASensorManager_getDefaultSensorEx()
+ * - ASensorManager_createEventQueue()
+ * - ASensorManager_destroyEventQueue()
+ */
 typedef struct ASensorManager ASensorManager;
 
+
 struct ASensorEventQueue;
+/**
+ * {@link ASensorEventQueue} is an opaque type that provides access to
+ * {@link ASensorEvent} from hardware sensors.
+ *
+ * A new {@link ASensorEventQueue} can be obtained using ASensorManager_createEventQueue().
+ *
+ * This file provides a set of functions to enable and disable
+ * sensors, check and get events, and set event rates on a {@link
+ * ASensorEventQueue}.
+ * - ASensorEventQueue_enableSensor()
+ * - ASensorEventQueue_disableSensor()
+ * - ASensorEventQueue_hasEvents()
+ * - ASensorEventQueue_getEvents()
+ * - ASensorEventQueue_setEventRate()
+ */
 typedef struct ASensorEventQueue ASensorEventQueue;
 
 struct ASensor;
+/**
+ * {@link ASensor} is an opaque type that provides information about
+ * an hardware sensors.
+ *
+ * A {@link ASensor} pointer can be obtained using
+ * ASensorManager_getDefaultSensor(),
+ * ASensorManager_getDefaultSensorEx() or from a {@link ASensorList}.
+ *
+ * This file provides a set of functions to access properties of a
+ * {@link ASensor}:
+ * - ASensor_getName()
+ * - ASensor_getVendor()
+ * - ASensor_getType()
+ * - ASensor_getResolution()
+ * - ASensor_getMinDelay()
+ * - ASensor_getFifoMaxEventCount()
+ * - ASensor_getFifoReservedEventCount()
+ * - ASensor_getStringType()
+ * - ASensor_getReportingMode()
+ * - ASensor_isWakeUpSensor()
+ */
 typedef struct ASensor ASensor;
+/**
+ * {@link ASensorRef} is a type for constant pointers to {@link ASensor}.
+ *
+ * This is used to define entry in {@link ASensorList} arrays.
+ */
 typedef ASensor const* ASensorRef;
+/**
+ * {@link ASensorList} is an array of reference to {@link ASensor}.
+ *
+ * A {@link ASensorList} can be initialized using ASensorManager_getSensorList().
+ */
 typedef ASensorRef const* ASensorList;
 
 /*****************************************************************************/
 
-/*
+/**
  * Get a reference to the sensor manager. ASensorManager is a singleton.
  *
  * Example:
@@ -203,31 +319,35 @@
 ASensorManager* ASensorManager_getInstance();
 
 
-/*
+/**
  * Returns the list of available sensors.
  */
 int ASensorManager_getSensorList(ASensorManager* manager, ASensorList* list);
 
-/*
+/**
  * Returns the default sensor for the given type, or NULL if no sensor
  * of that type exists.
  */
 ASensor const* ASensorManager_getDefaultSensor(ASensorManager* manager, int type);
 
-/*
+/**
  * Returns the default sensor with the given type and wakeUp properties or NULL if no sensor
  * of this type and wakeUp properties exists.
  */
 ASensor const* ASensorManager_getDefaultSensorEx(ASensorManager* manager, int type,
         bool wakeUp);
 
-/*
+/**
  * Creates a new sensor event queue and associate it with a looper.
+ *
+ * "ident" is a identifier for the events that will be returned when
+ * calling ALooper_pollOnce(). The identifier must be >= 0, or
+ * ALOOPER_POLL_CALLBACK if providing a non-NULL callback.
  */
 ASensorEventQueue* ASensorManager_createEventQueue(ASensorManager* manager,
         ALooper* looper, int ident, ALooper_callbackFunc callback, void* data);
 
-/*
+/**
  * Destroys the event queue and free all resources associated to it.
  */
 int ASensorManager_destroyEventQueue(ASensorManager* manager, ASensorEventQueue* queue);
@@ -235,17 +355,17 @@
 
 /*****************************************************************************/
 
-/*
+/**
  * Enable the selected sensor. Returns a negative error code on failure.
  */
 int ASensorEventQueue_enableSensor(ASensorEventQueue* queue, ASensor const* sensor);
 
-/*
+/**
  * Disable the selected sensor. Returns a negative error code on failure.
  */
 int ASensorEventQueue_disableSensor(ASensorEventQueue* queue, ASensor const* sensor);
 
-/*
+/**
  * Sets the delivery rate of events in microseconds for the given sensor.
  * Note that this is a hint only, generally event will arrive at a higher
  * rate. It is an error to set a rate inferior to the value returned by
@@ -254,14 +374,14 @@
  */
 int ASensorEventQueue_setEventRate(ASensorEventQueue* queue, ASensor const* sensor, int32_t usec);
 
-/*
+/**
  * Returns true if there are one or more events available in the
  * sensor queue.  Returns 1 if the queue has events; 0 if
  * it does not have events; and a negative value if there is an error.
  */
 int ASensorEventQueue_hasEvents(ASensorEventQueue* queue);
 
-/*
+/**
  * Returns the next available events from the queue.  Returns a negative
  * value if no events are available or an error has occurred, otherwise
  * the number of events returned.
@@ -280,55 +400,55 @@
 
 /*****************************************************************************/
 
-/*
+/**
  * Returns this sensor's name (non localized)
  */
 const char* ASensor_getName(ASensor const* sensor);
 
-/*
+/**
  * Returns this sensor's vendor's name (non localized)
  */
 const char* ASensor_getVendor(ASensor const* sensor);
 
-/*
+/**
  * Return this sensor's type
  */
 int ASensor_getType(ASensor const* sensor);
 
-/*
+/**
  * Returns this sensors's resolution
  */
 float ASensor_getResolution(ASensor const* sensor);
 
-/*
+/**
  * Returns the minimum delay allowed between events in microseconds.
  * A value of zero means that this sensor doesn't report events at a
  * constant rate, but rather only when a new data is available.
  */
 int ASensor_getMinDelay(ASensor const* sensor);
 
-/*
+/**
  * Returns the maximum size of batches for this sensor. Batches will often be
  * smaller, as the hardware fifo might be used for other sensors.
  */
 int ASensor_getFifoMaxEventCount(ASensor const* sensor);
 
-/*
+/**
  * Returns the hardware batch fifo size reserved to this sensor.
  */
 int ASensor_getFifoReservedEventCount(ASensor const* sensor);
 
-/*
+/**
  * Returns this sensor's string type.
  */
 const char* ASensor_getStringType(ASensor const* sensor);
 
-/*
+/**
  * Returns the reporting mode for this sensor. One of AREPORTING_MODE_* constants.
  */
 int ASensor_getReportingMode(ASensor const* sensor);
 
-/*
+/**
  * Returns true if this is a wake up sensor, false otherwise.
  */
 bool ASensor_isWakeUpSensor(ASensor const* sensor);
@@ -338,3 +458,5 @@
 #endif
 
 #endif // ANDROID_SENSOR_H
+
+/** @} */
diff --git a/include/android/storage_manager.h b/include/android/storage_manager.h
index bad2491..7f2ee08 100644
--- a/include/android/storage_manager.h
+++ b/include/android/storage_manager.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Storage
+ * @{
+ */
+
+/**
+ * @file storage_manager.h
+ */
 
 #ifndef ANDROID_STORAGE_MANAGER_H
 #define ANDROID_STORAGE_MANAGER_H
@@ -25,55 +33,62 @@
 #endif
 
 struct AStorageManager;
+/**
+ * {@link AStorageManager} manages application OBB storage, a pointer
+ * can be obtained with AStorageManager_new().
+ */
 typedef struct AStorageManager AStorageManager;
 
+/**
+ * The different states of a OBB storage passed to AStorageManager_obbCallbackFunc().
+ */
 enum {
-    /*
+    /**
      * The OBB container is now mounted and ready for use. Can be returned
      * as the status for callbacks made during asynchronous OBB actions.
      */
     AOBB_STATE_MOUNTED = 1,
 
-    /*
+    /**
      * The OBB container is now unmounted and not usable. Can be returned
      * as the status for callbacks made during asynchronous OBB actions.
      */
     AOBB_STATE_UNMOUNTED = 2,
 
-    /*
+    /**
      * There was an internal system error encountered while trying to
      * mount the OBB. Can be returned as the status for callbacks made
      * during asynchronous OBB actions.
      */
     AOBB_STATE_ERROR_INTERNAL = 20,
 
-    /*
+    /**
      * The OBB could not be mounted by the system. Can be returned as the
      * status for callbacks made during asynchronous OBB actions.
      */
     AOBB_STATE_ERROR_COULD_NOT_MOUNT = 21,
 
-    /*
+    /**
      * The OBB could not be unmounted. This most likely indicates that a
      * file is in use on the OBB. Can be returned as the status for
      * callbacks made during asynchronous OBB actions.
      */
     AOBB_STATE_ERROR_COULD_NOT_UNMOUNT = 22,
 
-    /*
+    /**
      * A call was made to unmount the OBB when it was not mounted. Can be
      * returned as the status for callbacks made during asynchronous OBB
      * actions.
      */
     AOBB_STATE_ERROR_NOT_MOUNTED = 23,
 
-    /*
+    /**
      * The OBB has already been mounted. Can be returned as the status for
      * callbacks made during asynchronous OBB actions.
      */
     AOBB_STATE_ERROR_ALREADY_MOUNTED = 24,
 
-    /*
+    /**
      * The current application does not have permission to use this OBB.
      * This could be because the OBB indicates it's owned by a different
      * package. Can be returned as the status for callbacks made during
@@ -94,6 +109,16 @@
 
 /**
  * Callback function for asynchronous calls made on OBB files.
+ *
+ * "state" is one of the following constants:
+ * - {@link AOBB_STATE_MOUNTED}
+ * - {@link AOBB_STATE_UNMOUNTED}
+ * - {@link AOBB_STATE_ERROR_INTERNAL}
+ * - {@link AOBB_STATE_ERROR_COULD_NOT_MOUNT}
+ * - {@link AOBB_STATE_ERROR_COULD_NOT_UNMOUNT}
+ * - {@link AOBB_STATE_ERROR_NOT_MOUNTED}
+ * - {@link AOBB_STATE_ERROR_ALREADY_MOUNTED}
+ * - {@link AOBB_STATE_ERROR_PERMISSION_DENIED}
  */
 typedef void (*AStorageManager_obbCallbackFunc)(const char* filename, const int32_t state, void* data);
 
@@ -125,3 +150,5 @@
 #endif
 
 #endif      // ANDROID_STORAGE_MANAGER_H
+
+/** @} */
diff --git a/include/android/window.h b/include/android/window.h
index 2ab192b..436bf3a 100644
--- a/include/android/window.h
+++ b/include/android/window.h
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file window.h
+ */
 
 #ifndef ANDROID_WINDOW_H
 #define ANDROID_WINDOW_H
@@ -26,28 +34,184 @@
  * Window flags, as per the Java API at android.view.WindowManager.LayoutParams.
  */
 enum {
+    /**
+     * As long as this window is visible to the user, allow the lock
+     * screen to activate while the screen is on.  This can be used
+     * independently, or in combination with {@link
+     * AWINDOW_FLAG_KEEP_SCREEN_ON} and/or {@link
+     * AWINDOW_FLAG_SHOW_WHEN_LOCKED}
+     */
     AWINDOW_FLAG_ALLOW_LOCK_WHILE_SCREEN_ON = 0x00000001,
+    /** Everything behind this window will be dimmed. */
     AWINDOW_FLAG_DIM_BEHIND                 = 0x00000002,
+    /**
+     * Blur everything behind this window.
+     * @deprecated Blurring is no longer supported.
+     */
     AWINDOW_FLAG_BLUR_BEHIND                = 0x00000004,
+    /**
+     * This window won't ever get key input focus, so the
+     * user can not send key or other button events to it.  Those will
+     * instead go to whatever focusable window is behind it.  This flag
+     * will also enable {@link AWINDOW_FLAG_NOT_TOUCH_MODAL} whether or not that
+     * is explicitly set.
+     *
+     * Setting this flag also implies that the window will not need to
+     * interact with
+     * a soft input method, so it will be Z-ordered and positioned
+     * independently of any active input method (typically this means it
+     * gets Z-ordered on top of the input method, so it can use the full
+     * screen for its content and cover the input method if needed.  You
+     * can use {@link AWINDOW_FLAG_ALT_FOCUSABLE_IM} to modify this behavior.
+     */
     AWINDOW_FLAG_NOT_FOCUSABLE              = 0x00000008,
+    /** this window can never receive touch events. */
     AWINDOW_FLAG_NOT_TOUCHABLE              = 0x00000010,
+    /**
+     * Even when this window is focusable (its
+     * {@link AWINDOW_FLAG_NOT_FOCUSABLE} is not set), allow any pointer events
+     * outside of the window to be sent to the windows behind it.  Otherwise
+     * it will consume all pointer events itself, regardless of whether they
+     * are inside of the window.
+     */
     AWINDOW_FLAG_NOT_TOUCH_MODAL            = 0x00000020,
+    /**
+     * When set, if the device is asleep when the touch
+     * screen is pressed, you will receive this first touch event.  Usually
+     * the first touch event is consumed by the system since the user can
+     * not see what they are pressing on.
+     *
+     * @deprecated This flag has no effect.
+     */
     AWINDOW_FLAG_TOUCHABLE_WHEN_WAKING      = 0x00000040,
+    /**
+     * As long as this window is visible to the user, keep
+     * the device's screen turned on and bright.
+     */
     AWINDOW_FLAG_KEEP_SCREEN_ON             = 0x00000080,
+    /**
+     * Place the window within the entire screen, ignoring
+     * decorations around the border (such as the status bar).  The
+     * window must correctly position its contents to take the screen
+     * decoration into account.
+     */
     AWINDOW_FLAG_LAYOUT_IN_SCREEN           = 0x00000100,
+    /** allow window to extend outside of the screen. */
     AWINDOW_FLAG_LAYOUT_NO_LIMITS           = 0x00000200,
+    /**
+     * Hide all screen decorations (such as the status
+     * bar) while this window is displayed.  This allows the window to
+     * use the entire display space for itself -- the status bar will
+     * be hidden when an app window with this flag set is on the top
+     * layer. A fullscreen window will ignore a value of {@link
+     * AWINDOW_SOFT_INPUT_ADJUST_RESIZE}; the window will stay
+     * fullscreen and will not resize.
+     */
     AWINDOW_FLAG_FULLSCREEN                 = 0x00000400,
+    /**
+     * Override {@link AWINDOW_FLAG_FULLSCREEN} and force the
+     * screen decorations (such as the status bar) to be shown.
+     */
     AWINDOW_FLAG_FORCE_NOT_FULLSCREEN       = 0x00000800,
+    /**
+     * Turn on dithering when compositing this window to
+     * the screen.
+     * @deprecated This flag is no longer used.
+     */
     AWINDOW_FLAG_DITHER                     = 0x00001000,
+    /**
+     * Treat the content of the window as secure, preventing
+     * it from appearing in screenshots or from being viewed on non-secure
+     * displays.
+     */
     AWINDOW_FLAG_SECURE                     = 0x00002000,
+    /**
+     * A special mode where the layout parameters are used
+     * to perform scaling of the surface when it is composited to the
+     * screen.
+     */
     AWINDOW_FLAG_SCALED                     = 0x00004000,
+    /**
+     * Intended for windows that will often be used when the user is
+     * holding the screen against their face, it will aggressively
+     * filter the event stream to prevent unintended presses in this
+     * situation that may not be desired for a particular window, when
+     * such an event stream is detected, the application will receive
+     * a {@link AMOTION_EVENT_ACTION_CANCEL} to indicate this so
+     * applications can handle this accordingly by taking no action on
+     * the event until the finger is released.
+     */
     AWINDOW_FLAG_IGNORE_CHEEK_PRESSES       = 0x00008000,
+    /**
+     * A special option only for use in combination with
+     * {@link AWINDOW_FLAG_LAYOUT_IN_SCREEN}.  When requesting layout in the
+     * screen your window may appear on top of or behind screen decorations
+     * such as the status bar.  By also including this flag, the window
+     * manager will report the inset rectangle needed to ensure your
+     * content is not covered by screen decorations.
+     */
     AWINDOW_FLAG_LAYOUT_INSET_DECOR         = 0x00010000,
+    /**
+     * Invert the state of {@link AWINDOW_FLAG_NOT_FOCUSABLE} with
+     * respect to how this window interacts with the current method.
+     * That is, if FLAG_NOT_FOCUSABLE is set and this flag is set,
+     * then the window will behave as if it needs to interact with the
+     * input method and thus be placed behind/away from it; if {@link
+     * AWINDOW_FLAG_NOT_FOCUSABLE} is not set and this flag is set,
+     * then the window will behave as if it doesn't need to interact
+     * with the input method and can be placed to use more space and
+     * cover the input method.
+     */
     AWINDOW_FLAG_ALT_FOCUSABLE_IM           = 0x00020000,
+    /**
+     * If you have set {@link AWINDOW_FLAG_NOT_TOUCH_MODAL}, you
+     * can set this flag to receive a single special MotionEvent with
+     * the action
+     * {@link AMOTION_EVENT_ACTION_OUTSIDE} for
+     * touches that occur outside of your window.  Note that you will not
+     * receive the full down/move/up gesture, only the location of the
+     * first down as an {@link AMOTION_EVENT_ACTION_OUTSIDE}.
+     */
     AWINDOW_FLAG_WATCH_OUTSIDE_TOUCH        = 0x00040000,
+    /**
+     * Special flag to let windows be shown when the screen
+     * is locked. This will let application windows take precedence over
+     * key guard or any other lock screens. Can be used with
+     * {@link AWINDOW_FLAG_KEEP_SCREEN_ON} to turn screen on and display windows
+     * directly before showing the key guard window.  Can be used with
+     * {@link AWINDOW_FLAG_DISMISS_KEYGUARD} to automatically fully dismisss
+     * non-secure keyguards.  This flag only applies to the top-most
+     * full-screen window.
+     */
     AWINDOW_FLAG_SHOW_WHEN_LOCKED           = 0x00080000,
+    /**
+     * Ask that the system wallpaper be shown behind
+     * your window.  The window surface must be translucent to be able
+     * to actually see the wallpaper behind it; this flag just ensures
+     * that the wallpaper surface will be there if this window actually
+     * has translucent regions.
+     */
     AWINDOW_FLAG_SHOW_WALLPAPER             = 0x00100000,
+    /**
+     * When set as a window is being added or made
+     * visible, once the window has been shown then the system will
+     * poke the power manager's user activity (as if the user had woken
+     * up the device) to turn the screen on.
+     */
     AWINDOW_FLAG_TURN_SCREEN_ON             = 0x00200000,
+    /**
+     * When set the window will cause the keyguard to
+     * be dismissed, only if it is not a secure lock keyguard.  Because such
+     * a keyguard is not needed for security, it will never re-appear if
+     * the user navigates to another window (in contrast to
+     * {@link AWINDOW_FLAG_SHOW_WHEN_LOCKED}, which will only temporarily
+     * hide both secure and non-secure keyguards but ensure they reappear
+     * when the user moves to another UI that doesn't hide them).
+     * If the keyguard is currently active and is secure (requires an
+     * unlock pattern) than the user will still need to confirm it before
+     * seeing this window, unless {@link AWINDOW_FLAG_SHOW_WHEN_LOCKED} has
+     * also been set.
+     */
     AWINDOW_FLAG_DISMISS_KEYGUARD           = 0x00400000,
 };
 
@@ -56,3 +220,5 @@
 #endif
 
 #endif // ANDROID_WINDOW_H
+
+/** @} */