-extern int fghIsLegacyContextVersionRequested( void );\r
-extern int fghMapBit( int mask, int from, int to );\r
-extern int fghIsLegacyContextRequested( void );\r
-extern void fghContextCreationError( void );\r
-extern int fghNumberOfAuxBuffersRequested( void );\r
+/* \r
+ * Helper functions for getting client area from the window rect\r
+ * and the window rect from the client area given the style of the window\r
+ * (or a valid window pointer from which the style can be queried).\r
+ */\r
+extern void fghGetBorderWidth(const DWORD windowStyle, int* xBorderWidth, int* yBorderWidth);\r