The alarm utility is used by selecting ALARM from the tkgoodstuff menu and following the simple instructions. When set, a little "A" appears in the top left corner of the analog clock frame, if you are using the analog clock; the color of the font changes if you are using only the digital clock. The alarm itself is a beep and a dialog box containing the message, if any, that you typed in when setting the alarm.
If only the time (or only the date) is displayed, you can see the date (or the time) by entering the clock display briefuly with the mouse pointer.
The Clock also serves as a clicking-point for the tkgoodstuff popup menu (mouse button 1).