allows you to override the default vertex adjustment and select which end vertex remains “frozen” in the same position when the edge length is modified. This option is disabled by default.

The default node movement is determined based on the association of the end vertices. If the association is the same, both vertices are moved equally. In other cases, the more restrictive vertex association is frozen automatically, and the other vertex is moved as per the length specified. Vertices associated to an entity will be restricted as opposed to non-associated vertices. The order of restrictive association is association to point > association to curve > association to surface.