key_description is a standard character string (can be replaced by @ and
a winio@ argument) that may include key words of the form: Ctrl, Shift, Alt,
Esc, Del, Enter, Left, Right, Up, Down, PgUp, PgDn, Tab, Home, End, F1 etc..
Character keys must be combined with one or more of Ctrl,
Shift and Alt, but Ctrl+Alt+character is reserved for use by the