diff --git a/java/src/com/tightvnc/decoder/RawDecoder.java b/java/src/com/tightvnc/decoder/RawDecoder.java
index 46d22f7..8272d3b 100644
--- a/java/src/com/tightvnc/decoder/RawDecoder.java
+++ b/java/src/com/tightvnc/decoder/RawDecoder.java
@@ -9,11 +9,17 @@
 import java.awt.image.MemoryImageSource;
 import java.awt.Color;
 
+//
+// This is base decoder class.
+// Other classes will be childs of RawDecoder.
+//
 public class RawDecoder {
 
   public RawDecoder(Graphics g, RfbInputStream is) {
     setGraphics(g);
     setRfbInputStream(is);
+    // FIXME: cm24 created in getColorModel24.
+    // Remove if no bugs
     cm24 = new DirectColorModel(24, 0xFF0000, 0x00FF00, 0x0000FF);
   }
 
@@ -22,6 +28,8 @@
     setGraphics(g);
     setRfbInputStream(is);
     setFrameBufferSize(frameBufferW, frameBufferH);
+    // FIXME: cm24 created in getColorModel24.
+    // Remove if no bugs
     cm24 = new DirectColorModel(24, 0xFF0000, 0x00FF00, 0x0000FF);
   }
 
@@ -37,6 +45,10 @@
     bytesPerPixel = bpp;
   }
 
+  //
+  // FIXME: This method may be useless in future, remove if so
+  //
+
   public int getBPP() {
     return bytesPerPixel;
   }
@@ -46,6 +58,36 @@
     framebufferHeight = h;
   }
 
+  //
+  // Private static members access methdos
+  //
+
+  protected ColorModel getColorModel8() {
+    if (cm8 == null) {
+      cm8 = cm8 = new DirectColorModel(8, 7, (7 << 3), (3 << 6));
+    }
+    return cm8;
+  }
+
+  protected ColorModel getColorModel24() {
+    if (cm24 == null) {
+      cm24 = new DirectColorModel(24, 0xFF0000, 0x00FF00, 0x0000FF);
+    }
+    return cm24;
+  }
+
+  protected Color[]getColor256() {
+    if (color256 == null) {
+      color256 = new Color[256];
+      for (int i = 0; i < 256; i++)
+        color256[i] = new Color(cm8.getRGB(i));
+    }
+    return color256;
+  }
+
+  //
+  // Unique data for every decoder (? maybe not ?)
+  //
   protected int bytesPerPixel = 4;
   protected int framebufferWidth = 0;
   protected int framebufferHeight = 0;
@@ -53,11 +95,17 @@
   protected Graphics graphics = null;
   protected RecordInterface rec = null;
 
+  //
+  // This data must be shared between decoders
+  //
   protected static byte []pixels8 = null;
   protected static int []pixels24 = null;
   protected static MemoryImageSource pixelsSource = null;
   protected static Image rawPixelsImage = null;
 
+  //
+  // Access to this static members only though protected methods
+  //
   private static ColorModel cm8 = null;
   private static ColorModel cm24 = null;
   private static Color []color256 = null;