CLOCKDSP -- "Clock Display lexfile". Adds CLOCK ON / OFF to BASIC.

Size: 328 bytes

CLOCK ON puts the HP-71 into clock display mode: the right end of the
display turns into a digital clock that updates every second, but the
rest of the display is left alone for you to do work of any kind as
usual! Even works in CALC mode.

CLOCK OFF turns off the clock display mode and returns the entire
display to your control.

Caution: Cannot be used with programs that use the WINDOW statement,
because the clock display mode resets the WINDOW every second.