All but the very simplest edge types do have an Settings object associated with them. This allows precise control over how they are rendered from the API. The user interfaces - the web and command line - were limited to the most urgent parameters - like sizes and may be edge type. I had added settings for the finger joints manually but adding everything else would have bloated both the code and the UI .

To solve this the new parameters are now created automatically from the Settings classes. The use of argparse argument_groups allows structuring them nicely. Improvements to the UI keep even generators like Box2 - which now has nearly as many knobs as an 747 cockpit - reasonable tidy by collapsing the settings of each edge type to just one line.