KB-DECIDE
=========

syntax: (kb-decide <string>)

This function returns a yes-no-cancel dialogue.
You get a suggestion. Then you can decide whether
you accept it or not. It returns T by "yes",
NIL by "no" and :cancel if you choose "cancel".

example: >(kb-decide "go to Main Menu?")
         T       will be returned if you have
                   choosen yes.