The Erase Area category of the Edit Options dialog box (Edit ® Options, Erase Area) defines the attributes of erased areas for the active edit layer for the current session only.
The Erase Area category of the Edit Preferences dialog box (Preference ® Options,
Edit, Erase Area) defines the attributes of erased areas for future edit layers for the current and future sessions. It does not affect the active edit layer.
specifies what shape the Erase Area tool draws. The options are Box, Polygon, Circle, and Ellipse.
Because the frame is background color (like the fill), we recommend you keep this at the default of 0.005 inch.