HP 39gII - Page 276

266 Programming
ISKEYDOWN Syntax: ISKEYDOWN(key_id);
Returns true (non-zero) if the key whose key_id is
provided is currently pressed, and false (0) if it is not.
MSGBOX Syntax: MSGBOX(expression or string [ ,ok_cancel?]);
Displays a message box with the value of the given
expression or string.
If ok_cancel? is true, displays and menu
keys, otherwise only displays the key. Default
value for ok_cancel is false.
Returns true (non-zero) if the user presses , false (0)
if the user presses .