Shrinks or extends a line or line segment from either endpoint. Double lines and multi lines can also be used. If you use this tool on a polyline or polygon, any adjacent segment will move to accommodate the new endpoint.
Note: You can use Line Length on splines and Beziers, however the extension will be straight element of the curve, not curved continuations as they are with arcs. 3D Polylines, and splines can also be used, but the resulting geometry will be derived relative to the objects workplane.
Note: Most standard Modify tools, such as Trim, Split, and Meet 2 Lines, will work with walls.