All collars have at least one edge physically connected to the profile. The connect edges may be cut parallel to the profile surface. This technique is illustrated in the slot creation procedure. For more information, see Move Slot Geometry and Dimensions to CrossSectionPlane Layer.
In order to identify the connected edges in the collar symbol, the edge and constraining dimension must be moved to the CrossSectionPlane layer.
Shift-click to select the connected edges and related dimensions.
Click Change Layer on the Layers toolbar.
On the dialog box, select the CrossSectionPlane layer, and click OK.