actually I forgot to explicitly mention when to clear the
semaphore
On Thu, 1 Mar 2018, R P Herrold wrote:
> then, in the 'document redraw' code, test the 're-draw wanted'
> semaphore and UNSET the 're-draw wanted' semaphore,
> remembering the state
and at the appropriate time in that code,
> and when it WAS set, ... redraw
-- R
Received on Fri Mar 2 01:04:47 2018
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