OpenMW-CS: rightclick in an empty place in the menu bar shows an unnamed checkbox
The top left corner of the "checkbox-window" (in the screenshot) is where I right-clicked.
You can't check the checkbox - it's really just a cosmetic thing.
(RM-2953 from redmine: created on 2015-09-30 by Who Knows, , closed on 2015-10-09 by cc 9cii)