Here is a list of all documented files with brief descriptions:

[detail level 123]

include
zcm
zcm.h	Base zCm context and broker lifecycle API
zcm_domain.h	Shared zCm domain endpoint resolution helpers
zcm_msg.h	Typed message builder/parser API for zCm payloads
zcm_node.h	Node registry and transport socket APIs
zcm_proc.h	High-level process bootstrap helpers
zcm_proc_runtime.h	Runtime config parsing and bootstrap helpers for zcm_proc daemons