Rendition Bell and Monitor

I've set both rendition bell and monitor to blink:

rendition bell "+B w"
rendition monitor "+uB w"

vbell is off.

However, it doesn't blink unless I do some screen command - redisplay
or bring up a window list etc.

Any ideas why?

--

I'd crawl over an acre of 'Visual This++' and 'Integrated Development
That' to get to gcc, Emacs, and gdb.  Thank you.
  -- Vance Petree, Virginia Power

                                                            .--.  oo
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