FUNCTION: GLint glRenderMode ( GLenum mode ) ;
FUNCTION: GLenum glGetError ( ) ;
-FUNCTION: char* glGetString ( GLenum name ) ;
+FUNCTION: c-string glGetString ( GLenum name ) ;
FUNCTION: void glFinish ( ) ;
FUNCTION: void glFlush ( ) ;
FUNCTION: void glHint ( GLenum target, GLenum mode ) ;