




The function gesture-spec-data returns an integer or keyword representing the key in the Gesture Spec object gspec.
When data is an integer, it is a non-negative integer less than cl:char-code-limit, and gspec represents a keystroke with the key indicated by the character which is the value of (code-char data).
data can also be a keyword such as :f6, when gspec represents a keystroke with F6 pressed.
LispWorks User Guide and Reference Manual - 20 Sep 2017