Banana and Slacker, thanks for your very clearly-communicated help! I was
able to install both of the sessions as you outlined, and both options have
given me window-snapping (Banana, you correctly supposed I was referring to
making a window fill half the screen by dragging to a side/corner, or the
whole screen by dragging to the top, etc). While I appreciate the modern look
of the GNOME shell, I prefer the simpler style of Compiz, so I think I'll be
going with that.
I have two notes to mention:
(1) Slacker, your Gnome Flashback page is fantastic, but there may be a typo.
In the second yellow box under "Using the Script," I had to change
$ tar xvf trisquel-compiz.sh.tar.gz
to
$ tar xvf trisquel-compiz.tar.gz
It couldn't find the file when I used the first one, but the second one
worked like a charm.
(2) I wish I'd realized early on was that NOTHING comes pre-loaded, so to
speak, when you install Compiz. You have to enable EVERYTHING. I think I'm
going to make an edit to the Compiz page to say as much, and to put a link to
Slacker's Gnome Flashback page. If that had been on the Compiz page two days
ago, this all would've been much quicker!