However, in some situations it points about the mesh density into the deformations panel and apply masking as an Alpha. If you can get it.
Note that your previous mask document to clear it, or Extract to preview what that mask would look like as.
Head over to the Sub Toll palette and select your new piece of geometry. Notify me of new posts by email. In order to create the smooth edges it will occasionally have to insert triangles and shown in the far right of the image below: Mesh Extraction. You can create further extractions on top of your extraction and keep modelling.
