Column Copy/Move/Paste in RDi

In a separate thread for a broader topic, there was discussion about column
(rectangle) copy/move/paste in RDi.  This was a feature I could never
figure out the several times I wanted to use it in RDi, so I always ended
up going back to SEU to do it.

Alt-C kept confusing me, equating it to Ctrl-C's function.  I also was
getting tripped up by the three paste options.  So, I've written a little
cheat sheet, and thought I'd share it here. (Note that the "Pasting"
section lined up using a fixed font.)

_ Dan

Column Copy/Move/Paste in RDi

Alt-R to mark the first corner, then
Alt-R to mark the opposite corner
(this completes the "copy" part, like Ctrl-C does in normal Windows)

Alt-U to deselect selected text

Pasting:
         Shift or Delete   Original selection
           at target?          deleted?
 Alt-C       Shift                No
 Alt-M       Shift                Yes
 Alt-Z       Delete               No