saving plots as objects?

Hi I had two questions regarding plots:

* Is there are way to save a plot in the form of an object such that it
could be displayed/modified later?

Depends on what you want to do. Probably not for regular (base) plots. The 
grid package has a concept of objects that can be edited (before and/or 
after plotting them). Functions in the lattice package produce objects 
that may be close to what you want. They are not plots themselves, but 
rather a self-contained description of a plot (in the sense that they 
contain the data as well as instructions on how to plot it). The data part 
cannot be easily changed, but almost everything else can be manipulated 
before plotting.

Deepayan