@brief: insert-toggle toggles between overwrite / insert mode,
S, C, A (and M) are modifier keys:
S == <SHIFT>
C == <CTRL>
A == <ALT> == M (usually)
You can use the <F1> key when the cursor is on a Slick-C command/function (in a Slick-C file) to get context sensitive help.
'help <command>' on cmdline or via menu 'Help>Index: <command>' works too.
HS2