$FUNCNAME$
  DISPBEGIN()
$CATEGORY$
  TERMINAL/IO
$SUMMARY$
   Begin buffering screen output
$LANG_RU$
        .
$SYNTAX$
     DISPBEGIN() --> NIL
$LANG_RU$
     DISPBEGIN() --> NIL
$RETURNS$
     DISPBEGIN() always returns NIL.
$LANG_RU$
     DISPBEGIN()   NIL.
$DESCRIPTION$
     DISPBEGIN() is a screen function that informs the xClipper display
     output system that the application is about to perform a series of
     display operations.

     Use DISPBEGIN() with DISPEND() to allow the display output system to
     buffer display updates.  Display output which occurs after DISPBEGIN()
     but before DISPEND() is allowed to accumulate in internal buffers.  When
     DISPEND() executes, any pending updates appear on the physical display.
     This is useful in applications where complex screen displays are slow
     and the appearance of performance is desired.

     DISPBEGIN() and DISPEND() calls are optional.  They are not required for
     normal output.
$LANG_RU$
     DISPBEGIN() -  ,    xClipper,
             .

     DISPBEGIN(),     DISPEND(),  
           .  
     ,    DISPBEGIN(),   DISPEND(),
         .   
     DISPEND()      .
        ,     
         .   DISPBEGIN()
      DISPEND() .      
     .
$EXAMPLES$
       This example buffers screen output, updates the screen, and
	then displays the buffered screen output:

	DISPBEGIN()            // Start screen buffering
	//
	SETPOS(10, 10)
	DISPOUT("A display update")
	SETPOS(11, 10)
	DISPOUT("Another display update")
	//
	DISPEND()               // Display buffered screen data
$LANG_RU$
           , 
       ,     :

       DISPBEGIN()            //   
       //
       SETPOS(10,10)
       DISPOUT(" ")
       SETPOS(11,10)
       DISPOUT("   ")
       //
       DISPEND()             //    
$SEEALSO$
  DISPEND(),DISPCOUNT()
$END$
