.BG
.VE $Header: /usr3/s/current/s/.help/RCS/defer,v 1.2 83/12/30 19:27:12 rab Exp $
.FN defer
.TL
defer: Control Deferred Graphics
.CS
defer(on, ask)
.PP
.AG on
logical which enables (TRUE) or disables (FALSE) deferred
graphics.  Default TRUE.
.AG ask
logical flag, if TRUE the user is asked "Save last frame?"
before each new frame.  Answers beginning with "N" or "n"
cause the previous frame to be removed from the graphics
save file.  Default, FALSE, all frames are saved without
user interaction.
.PP
All deferred graphics output goes to the file "sgraph".  If "sgraph"
already exists, new material will be appended.
.PP
The graphics save file may be replotted on devices other than the
device in effect during the `defer' function.  This includes batch
plotting, if available.
.PP
The graphics save file is in character format, and contains commands
with the names "points", "text", "lines", "segs", and "eject" followed
by the appropriate data values.  The names "par" and "diff" reflect
the graphical parameter changes made during plotting.
.PP
.EX
defer   # turn on deferred graphics
defer(FALSE)   # turn off deferred graphics
defer(ask=TRUE)   # turn on, ask about saving each frame
.KW deferred graphics
.KW plot*
.KW session
.KW dplot*
.KW device*
.WR
