I just tried that. Thanks! After some few experiments
it seems to work best if I do this way...

$other_module::mw_other->lower
$other_module::mw_other->raise
$help_module::mw_help->raise

I first lowered, then raised the other module's
MainWindow before raising the help module's as I
wanted the other module's MainWindow to be
second-from-top, just under that of the help
module.

Thanks,

PS -- The URL for this project (soon to be updated
for todays meditative realization) is Test Log GUI