This program creates a multi-line dialog box, similar to the ALERT
function in AutoLISP, except that it contains both OK and CANCEL
buttons. Depending on the user selection, CONFIRM will return T or
nil, respectivly. The message passed is a text string, and can contain
;; the newline character (\n). If you pass the null string ("") as the
;; title argument, the program will use the default title of 'Confirm'