> On Linux systems, is it possible to save a macro quickly defined using
> F3 and F4 and have it recalled at a later time and run by pressing
> F4 ?
Been awhile since I wanted to save (or even name) a keyboard macro, but try
C-x C-k n
to give it a name, or
C-x C-k b
to bind it to a key sequence. Once named, you can save its definition
across sessions with
M-x insert-kbd-macro RET
to insert it in the current buffer (typically one visiting ~/.emacs).
Not sure about the F3/F4 business. Those two keys have nothing to do
with macros in my world. I still use C-x ( and C-X ) (old habits die
hard). I presume somewhere in your setup you bound F3 and F4 to
commands which start and end macro definitions. At any rate, you can
read all about messing with macros here: