callback
The command procedure to be executed when the help button (user button 1) of window is pressed during menu polling. The window identifier is passed to the procedure as a parameter. New windows have a help procedure of null.
By some strange quirk of fate, the Help button of a window is always shown on the right edge of its menu bar. Buttons 2 through 16 are shown left-justified in numeric order as one would expect.
window.help (<window>)
win1.help = { exec /usr/helplib/ghelps }