Question: what does Maple save?

If I save a worksheet after an interactive session and then return to it at a later date I have to re-execute all my commands, redefine my functions etc. but my previous plots are "kinda" remembered by Maple. For example, if I had previously executed the command
> display([p||(1..50)], insequence = true);
then that plot will be active in the sense that I can run through the 50 plots, stop at any plot, etc.
So in that sense Maple has saved the plots. But if I want to look more closely at p17 that is not possible.
>p17;  just returns p17 and
>display({p17}, view=[0..1, -1..1]); does not return anything.

 

What exactly is Maple saving?

Thanks,

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