osf1 man page for xsynchronize

XSynchronize(3X11)														XSynchronize(3X11)

NAME
       XSynchronize, XSetAfterFunction - enable or disable synchronization

SYNOPSIS
       int (*XSynchronize(display, onoff))()
	       Display *display;
	       Bool onoff;

       int (*XSetAfterFunction(display, procedure))()
	       Display *display;
	       int (*procedure)();

ARGUMENTS
       Specifies  the  connection  to  the  X  server.	Specifies the procedure to be called.  Specifies a Boolean value that indicates whether to
       enable or disable synchronization.

DESCRIPTION
       The XSynchronize function returns the previous after function. If onoff is True, XSynchronize turns on synchronous behavior.  If  onoff	is
       False, XSynchronize turns off synchronous behavior.

       The specified procedure is called with only a display pointer.  XSetAfterFunction returns the previous after function.

SEE ALSO
       XSetErrorHandler(3X11)

       Xlib -- C Language X Interface

																XSynchronize(3X11)