About the DrawMesh GUI
The DrawMesh GUI is a tool to create new finite element meshes for use with redAnTS GUI.
Any domain must be built from 4-sided subdomains, which are joined together. Curved sides
and varying numbers of subdivisions are supported.
When you finish drawing your desired domain, DrawMesh writes a mesh generation file,
calls the program mesh_3tri, and writes and loads a final mesh file.
That file can later be loaded directly from the redAnTS GUI using the "Import - Mapping Method" option from the Mesh menu.