Surface Curve Grid Dialog OptionsKeyCreator \ Create \ Advanced-Spline \ Surface-Grid \ Surface-Curve-Grid-Dialog-Options
When Surface Curve Grid is selected from the Create>Advanced Splines submenu, the following dialog appears.
Curve Spacing Method
Just Draw the Curves Temporarily
When selected, the vectors will only appear temporarily. That is, they will disappear as soon as you select another surface, or select BACKUP or ESCAPE. They remain under Immediate Mode Commands so that you are able to use the View features (Zoom, Pan, etc).