This feature has been requested, so I thought I'd leave
this RFE here as a placeholder for it, even though it
isn't necessarily RText-specific.
I have attempted to separate generic "application
framework" code from RText-specific code. You could
use the app framework code in another app (in fact I'd
like to do this very thing as a proof-of-concept), but
the documentation just isn't there. Also, there are a
couple of things I'd like to make a little cleaner
(namely loading/saving preferences and Mac OSX support).