The GO button always says what your next press will do.

• Start. GO starts the number shown, with its count in.
• Hold or fermata. The click stops and waits. GO releases it, with its prep clicks.
• Vamp. GO leaves at the end of the pass, or at the next barline if the row says so.
• Attacca. A number marked attacca runs straight into the next with no stop. In the last bar the lamp reads Attacca. If it ends on a fermata, GO reads Release into, then the next number.
• Next number. When a number ends, the first GO opens the next one (its Segue to number, or else the next in the show) and the lamp reads Standby. The second GO starts it. It takes two presses so a stray press or a bouncing pedal cannot start the wrong number.
• Stop stops the click at once, and takes back a number GO has offered. While the click runs, Esc stops it only when pressed twice within 2 seconds, so one stray key cannot stop the show.
• Pause. The Pause button, P, B or the period (a clicker's blank screen key), or Pause on Big screen, stops the click at once and keeps the place. GO, or Pause again, starts it again on the next beat after a one bar count in at that beat's tempo. Stop forgets the place. At a hold there is nothing to pause: GO releases it.
• Pedals and clickers. Page Down, the Right arrow, Space and Enter are GO. One press is one GO, however long it is held down. While the click runs, GO and Back work on every view, Enter is GO even when a button has the focus, and Page Down and Page Up work even in a text box.
• Jump. While the click runs, double tap a row of Coming up, pick a bar in Jump, or double tap a row's number in Tempo map. GO then reads Jump to, and jumps there at the next barline, at its tempo. From a hold, GO releases straight into it. With the click stopped, the same picks set where GO starts.
• Back. Page Up or the Left arrow (a clicker's back button) clears a jump you aimed, takes back a jump GO armed before it lands, and cancels a vamp exit GO armed, while the pass is still playing.
• Double press guard. A second GO this soon after the last one is ignored, and a message says so, so a pedal that bounces cannot release two holds.
• The keys. If another window has the keys, a warning at the top says so. Click anywhere in TempoLett to bring them back. While the click runs, F5 and Ctrl+R do not reload, and closing the tab asks first.

Mark a number attacca in Tempo map, beside Segue to.