Template:SRH Modify Material for Structure Workflow

1. Switch to the SRH-2D materials coverage.
2. Using the Create Feature Arc File:Create Feature Arc icon.png tool, create arcs for the enclosed area between the two structure arcs.
3. Use the Build Polygons command to create polygons.
4. Using the Select Feature Polygons tool, select a polygon and use the Assign Material Properties command.
5. In the Assign Material Properties, unassign the material type.