Rail Surface presets
Custom versions of the Rail surface tool corresponding to the different Generation Curves and Rail Curves settings are included on the default shelves that ship with Alias.
Edit options for existing surfaces
To open the control window for an existing surface and edit its properties, choose Object Edit > Query Edit and click the surface.
In Surface Edit > Trim > Trim Surface, you can click anywhere inside the surface edges to specify an area to trim, keep or divide. You do not have to click a "visible" part of the surface (such as an isoparametric curve).
If you have many surfaces to trim, you can select them all using a pick box before choosing the Trim Surface tool.
You can add surfaces to trim by holding the Shift key while picking surfaces with the Trim Surface tool.
Extract edges or interior curves.
If you click an isoparametric curve or trim edge with the Rebuild curve tool, it will be rebuilt into a curve on surface. You can only rebuild these curves as degree 1 or 3 curves.
Large mesh performance
If a mesh is very large and will slow down interaction, you may want to adjust the Mesh Density (in the Quality section of the Modeling Control Panel) to a smaller value before opening your mesh model.
Adjust mesh transparency
When hardware shading a mesh, use the Meshes slider (in the Transparency section of the Control Panel) to fade the mesh lines so that the shading can show through.