Display just the five marking menu zones. Menu sets
are not available.
Center Zone Only
Make only the center zone (Maya) active everywhere.
North, South, East, and West Zones and menu sets are not available.
Center Zone RMB Popups
Turn this option on to display menus for the selected
menu set when you -click
the workspace. The menu set appears as a pop-up instead of a row.
Note that the functional menu sets do not display when this option
is on, even if you have selected to show them.