You can extend the geometry of fixed and floating profile entities within a profile view. Extensions are added to the ends of the selected profile entity to which entities are not already attached.
When a fixed tangent or curve is extended, extensions are created on both ends of the entity if no other entities are attached to the ends. If an entity is already attached to the end of a fixed tangent or curve, an extension is not created at that end.
When a floating tangent or curve is extended, an extension is created on the floating end of the entity if no other entities are attached to that end. If an entity is already attached to the floating end of a floating tangent or curve, an extension is not created.
Note: Extensions are not supported for free tangents or curves because both ends of free entities are connected to other entities.
If there is no grid padding specified in the profile view style, the entities are extended to the extents of the profile view. If grid padding is specified in the profile view style, the entities are extended to the edge of the grid padding rather than to the extents of the profile view.
Click the profile. Click Profile tabModify Profile panelGeometry EditorFind.
Note: You can control the appearance of the extensions by modifying the Line Extensions and Parabolic Curve Extensions component display options on the Display tab of the Profile Style dialog box.