is very easy to use global grabs to render a display completely
unusable (e.g. by setting a grab on a widget which does not respond to
events and not providing any mechanism for releasing the grab).  Take
<I>extreme</I> care when using them!
<H3><A NAME="M11">BUGS</A></H3>
It took an incredibly complex and gross implementation to produce
the simple grab effect described above.
Given the current implementation, it is not safe for applications
to use the Xlib grab facilities at all except through the Tk grab
