From Audacity Wiki
|This page of developer code and/or digital audio documentation is part of a collection of pages for learning about our code. We aim to increasingly add interactive diagrams to these pages and over time connect better to the doxygen documentation.|
Scaffolding classes support Audacity code in some way, but typically have nothing to do with audio per se. Many of these classes may be reusable in other projects.
Here are some more classes relevant to scaffolding.