cproudlock a18335b61c Step through slides with the arrow keys ...

Somebody standing at a display who wants to hold a slide, or go back to one that
has just passed, had to wait for the whole rotation to come round again.

Left and right arrows step back and forward; PageUp and PageDown do the same, so
a presenter remote works without being told about it. The listener is on window
rather than an element because a display has nothing focused.

Stepping restarts the rotation timer instead of leaving it running. Advancing by
hand and then having it move again a second later, because the existing timer
was nearly up, reads as the display ignoring the keypress.

Ignored entirely when there is less than one slide to move to.

2026-08-06 07:27:59 -04:00

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