anchor.diff:     *  SDL_EnableScreenSaver()
      *}
   
  -  procedure SDL_DisableScreenSaver(void);
  -
  -
  -  {**
  -   *  \name OpenGL support functions
  +  procedure SDL_DisableScreenSaver cdecl external {$IFDEF GPC} name 'SDL_DisableScreenSaver' {$ELSE} SDL_LibName {$ENDIF};
  +
  +  {**
  +   *  OpenGL support functions
      *}
   
     {**
  
positive.code:    *  SDL_GL_CreateContext()
     *}
  
    procedure SDL_GL_DeleteContext(SDL_GLContext context);
  
    {*OpenGL support functions*}
  
  
negative.code:    *  SDL_GL_GetSwapInterval()
     *}
  
    function SDL_GL_SetSwapInterval(interval: SInt32): SInt32 cdecl external {$IFDEF GPC} name 'SDL_GL_SetSwapInterval' {$ELSE} SDL_LibName {$ENDIF};
  
    {**
     *  Get the swap interval for the current OpenGL context.
  