About the Separate Surface Region Feature User Interface
The Separate Surface Region tab consists of commands, tabs, and shortcut menus. Click > > 
Separate Surface Region to open the Separate Surface Region tab.
Separate Surface Region to open the Separate Surface Region tab.Commands
• Selection Method
◦ 
Manual Selection—Selects contours to separate to a new surface.
Manual Selection—Selects contours to separate to a new surface.◦ 
Auto-detect—Selects contours to keep in the source surface. All other contours will be separated into a new surface.
Auto-detect—Selects contours to keep in the source surface. All other contours will be separated into a new surface.• References
◦ Surface to separate collector—Displays a surface from which to separate surface regions.
◦ Contours collector—Displays contours to separate to a new surface when Manual Selection is selected.
Manual Selection is selected.Tabs
• Placement
◦ Surface to separate collector—Displays a surface from which to separate surface regions.
◦ Contours collector—Displays contours to separate to a new surface when Manual Selection is selected.
Manual Selection is selected.◦ Contours to keep collector—Displays contours to keep in the source surface when Auto-detect is selected. All other contours will be separated into a new surface.
Auto-detect is selected. All other contours will be separated into a new surface.• Options
◦ Create new surface
▪ For each selected contour separately—Creates a separate surface for each selected contour.
▪ For all selected contours together—Creates one single surface for all the selected contours.
• Properties
◦ Name box—Sets a name for the feature.
◦ 
—Displays detailed feature information.
—Displays detailed feature information.Shortcut Menus
Right-click the graphics window to access shortcut menu commands.
• Surface to Separate—Activates the Surface to separate collector.
• Contours—Activates the Contours collector for Manual Selection.
Manual Selection.• Contours to keep—Activates the Contours to keep collector for Auto-detect.
Auto-detect.• Clear—Clears the active collector.
• Manual Selection—Activates Manual Selection contour selection.
Manual Selection contour selection.• Auto-detect—Activates Auto-detect contour selection.
Auto-detect contour selection.