Advances the graphics driver to the next frame. This can be used to
skip a position in a multi-figure layout.
USAGE:
frame()
SIDE EFFECTS:
The current graphics device will move to the next figure, eject to a new
page, clear the screen, or do whatever
is appropriate for the device in its current state.
The graphics parameter new is set to TRUE, frm is incremented,
and mfg is incremented when there are multiple plots.
DETAILS:
In multiple figure mode, frame will
advance to the next figure.
It takes two calls to frame to skip a figure: the first goes to the
next figure, and the second call skips to the figure after that.
This function does not concern memory frames - see sys.call for
such functions.