diff --git a/include/input/Input.h b/include/input/Input.h
index 96b6885..c360f63 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -149,10 +149,22 @@
      * NOTE: If you want a flag to be able to set in a keylayout file, then you must add it to
      * InputEventLabels.h as well. */
 
+    // Indicates that the event should wake the device.
     POLICY_FLAG_WAKE = 0x00000001,
+
+    // Indicates that the key is virtual, such as a capacitive button, and should
+    // generate haptic feedback.  Virtual keys may be suppressed for some time
+    // after a recent touch to prevent accidental activation of virtual keys adjacent
+    // to the touch screen during an edge swipe.
     POLICY_FLAG_VIRTUAL = 0x00000002,
+
+    // Indicates that the key is the special function modifier.
     POLICY_FLAG_FUNCTION = 0x00000004,
 
+    // Indicates that the key represents a special gesture that has been detected by
+    // the touch firmware or driver.  Causes touch events from the same device to be canceled.
+    POLICY_FLAG_GESTURE = 0x00000008,
+
     POLICY_FLAG_RAW_MASK = 0x0000ffff,
 
     /* These flags are set by the input dispatcher. */