Setup: Customization
- constraints.wrm: data entry tests
- datainfo.wrm: startup notice
- displays.wrm: display types, sizes, titles, help
- layout.wrm: layout in main window
- models.wrm: schema
- options.wrm: choices for class-display behavior
- passwd.wrm: controls write access
- subclasses.wrm: definitions for "filtered" classes
- table.menu.wrm: associates classes and pre-defined tables