Rather than include Jython support in the Modelzilla framework, it is packaged as an application module, so that there is no Jython dependency in the framework. Over the past few years, we have experimented with Jython, resulting in some Jython dependencies being sprinkled around the Modelzilla code. This has all been removed as of the release of the "Jython Console" ap-mod. The Java-based framework now has nothing to do with Python.

A scripting system is useful for:

• Automating repetitive assemblies. This especially relevant to CAD work. Often many similar objects need to be created, for example 50 circles with computed radii, that are a pain to enter with the interactive GUI.
• Building high level templates. In CAD work it is great to be able to create a template object such like a bracket and parameterize it to control such things as the screw hole diameter and overall width and height. This allows you to quickly make many similar versions of the bracket.
• Doing animations. It is possible to write a loop that modifies parameters in the Modelzilla database, causes a redraw after each set of modifications and does an image dump.
• Debugging. It is handy to use Jython to print out the state of various objects under debugging scrutiny.