* [docu] added description and examples for shader file, class, procedure, function and main

header/examples/color.shdr

@@ -3,6 +3,9 @@
 {$END}
 
 {$CLASS ColorFrag $EXTENDS Color}
+    
+    /* you can also define code here. It will be added when the code for the class is generated */
+    
     {$FUNC 'vec4' GetColor $INLINE}
         {$IF UseColorMap}
             {$VAR 'vec2' '_texCoord' 'gl_TexCoord[0].st'}