Saving and replaying plots

[Guido Masarotto]

Is a mechanism for saving and replaying later the content of the current
graphic device hidden somewhere? Or is it planned?

If not, I would like to have something of this sort so I can try to
implement it (when I will have some time,of course) and if:
1) it is simple as graphics.c/copyDisplayList(...) suggests, i.e,
   it is enough to duplicate, save and restore (device)->dpSaved and 
   (device)->DisplayList;
2) idea is sensible; in particular, I have no idea of how much
   memory is `eaten' by the DisplayList of a `medium size' plot.
   
guido   
   
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