IMHO the keyboard editor is not helpful when user attempts to add a key
combo for some "internal function".
Basically, this complaint is about the xfce4-popup-* tools (maybe there
are more useful apps, how should I know without documentation?). The
only hint was in the XFCE FAQ about xfce4-popup-windowmenu and in
different context but what I really needed was
xfce4-popup-applicationsmenu.
This information should be part of the editor dialog, currently there is
no help button, no tool tip, no selector control for internal tools in
the entry editor, just nothing useful for the mentioned purpose to ease
user's life.
Regards,
Eduard.