What is where

Every feature, op, media step, command and format mosaic knows about, with the parameters each one takes. Reach for these when you know what you want to do and need the name and the knobs.

Page	Holds
Features	52 registered features, grouped by category, with their parameters
Ops	22 registered ops -- trackers, training, inference, frame extraction and media
Media steps	7 steps a preprocess run applies to make a media variant, with their parameters
CLI	Every mosaic command and flag
Track formats	8 track converters, 4 schemas, 3 label converters

These five pages are generated from the registries themselves by scripts/gen_docs_reference.py. Continuous integration regenerates them and fails if the result differs from what is committed, so a count here cannot fall behind the code that produces it.

What a Python object takes

Read its docstring, in the source or in an editor. There is no rendered API reference: the hand-written one reached under a third of the tree with nothing to keep it honest, so what it omitted read as absent from the toolkit.