There isn't much documentation on the internals, aside from source code. Mezzano is mostly one-man effort, and documenting things properly (and keeping it up to

There isn't much documentation on the internals, aside from source code. Mezzano is mostly one-man effort, and documenting things properly (and keeping it up to date!) is substantial extra work. But you can ask the author on Freenode #mezzano IRC channel if you wonder about something specific.