CloseGraphicsFolio 
 Closes the Graphics folio.
Synopsis
Err CloseGraphicsFolio (void)
Description
This call terminates access to the Graphics folio, freeing any resources allocated by calling OpenGraphicsFolio(). 
Once the Graphics folio is closed, the task should no longer call any calls from the folio. 
Return Value
The call returns 0 if successful or an error code (a negative value) if an error occurs. 
Implementation
Convenience call implemented in graphics.lib V21. 
Associated Files
graphics.h, graphics.lib
See Also
OpenGraphicsFolio()