Once the original message has been yanked into the reply
buffer, and sc-cite-original has had a chance to do
its thing, a number of useful Supercite commands will be
available to you. Since there is wide variety in the keymaps that
MUAs set up in their reply buffers, it is next to impossible for
Supercite to properly sprinkle its commands into the existing
keymap. For this reason Supercite places its commands on a
separate keymap, putting this keymap onto a prefix key in the
reply buffer. You can customize the prefix key Supercite uses by
changing the variable sc-mode-map-prefix. By
default, the sc-mode-map-prefix is C-c
C-p; granted, not a great choice, but unfortunately the
best general solution so far. In the rest of this chapter, we'll
assume you've installed Supercite's keymap on the default
prefix.