/usr/share/menu/openbox is in openbox 3.6.1-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | ?package(openbox):needs="wm" section="Window Managers" \
title="Openbox" command="/usr/bin/openbox" \
icon="/usr/share/pixmaps/openbox.xpm"
|