PGPLOT Module: PGUPDT -- update display


Update the graphics display: flush any pending commands to the
output device. This routine empties the buffer created by PGBBUF,
but it does not alter the PGBBUF/PGEBUF counter. The routine should
be called when it is essential that the display be completely up to
date (before interaction with the user, for example) but it is not
known if output is being buffered.

Arguments none