Show Work Grids
Display > Show
Work Grids
Description:
The Show Work Grids (Display > Show Work Grids) option, when checked, displays
work grids representing XY, YZ, or XZ plane in each viewport, as
appropriate. All grids are hidden when this option is unchecked, and
shown when checked on the menu.
Notes:
-This option affects
all viewports, not just the active viewport.
-Grid options can be edited in the Display
Options (Options > Display
Options...) dialog.