When a window is iconified, meaning hidden in flwm, an ICCCM style
MapRequest doesn't de-iconify it, whereas I hoped that it would.
For example with xwit and an xterm,
xwit -iconify -id $WINDOWID; sleep 2; xwit -pop -id $WINDOWID
The xterm is iconified, but then the -pop does not de-iconify the way I
think it should.