Custom hatch creation
"Developing a hatch pattern definition requires knowledge, practice, and patience." (from AutoCAD Help)
For the impatient, there are hatch generators. Some generators require AutoCAD or TurboCAD to operate, others are are self-standing. Some confine the pattern template within a unit square or a rectangular patch. Some generate compact patterns, others can create very large patterns.
None offers HatchKit's unique ability to reliably edit and rescale existing hatch patterns.