Creates a figure to countdown remaining time (minutes/seconds only).
By default, the figure includes an optical illusion created with lines and patches. This can be turned off.
(Third argument is optional; enter 0 to suppress optical illusion.)
Shows how to use timer objects and callbacks.
very good thanks! (useful)
perhaps I would add an optional sound at end to let you know. Say for example:
if that did not make sense please see:
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