Share Email Facebook Twitter LinkedIn Create Runoff Surface Reference Creates a runoff surface automatically. Access: On the Core/Cavity tab, click Create Runoff Surface. Runoff Loop Auto Detect Enables automatic detection of all loop edges. Name Specifies the name of the manually selected or auto-detected edges. Direction Specifies the direction of the edge. Click Direction, click the pull-down menu, and select the X, -X, Y, or -Y position. Preview Updates the preview of the runoff surface in the graphics window. Optional Extends the dialog to display more options. Parent topic: About Create Runoff Surface Related Tasks To Create Runoff Surface