Use the Point option to trim or extend objects to a point. The operation behaves slightly differently for various objects.
The cursor icon changes to a magnet and a circle is drawn on the end point or edge to be limited.
If there are only two curves in a particular direction, then you can't trim in that direction unless you drag the end of the surface.
You can extend surfaces and curves either linearly or along their curvature.
Consider the following surface:
This surface extends linearly as follows:
It extends along its curvature as shown below:
By default, surfaces and curves extend linearly. To change from linear to curvature mode, click the Extend linearly button to toggle to the Extend along curvature button .
The Next Solution button cycles through the possible solutions given by the trim boundaries on your limited surfaces.
The edge or end point with the marker is limited.
You can change the edge or end point using the Edge/End Point drop-down list.