[R] How to save & play back an entire R session?

[Roy Shimizu]

Thank you all.  I experimented with the various suggestions you
proposed.  Saving the session history is indeed easy (savehistory).
The problem is the playback.  I didn't find a reliable method.  Plus,
I now realize that the very idea of playing back a saved session is,
in general, a bad one, since such a session may have made changes to
disk.  So I'll go with Rob's idea of working indirectly from a script
that I keep re-sources.

Thanks again!

Roy