Overview - historical upstream project overview notes.
Install - installation notes and platform-specific setup.
FAQ and bugs - old FAQs, bug notes, and translated question lists.
Features - feature-specific notes such as trustees, PIPE-FS, PPP, file sharing, and NLS.
Quota - Linuxquota and NWQUOTA backend design.
History - old changelog, news, credits, and package metadata.
Packaging - distro packaging snippets kept as references.
Man pages - manual pages.
Assets - images used by documentation or packaging.
Old - legacy build/configuration references. The old BSD/Unix makefile is kept there as historical build reference.
NSS_NAMESPACE_AUDIT.md - NSS namespace replacement/import audit.
NSS_PUBLIC_CORE_AUDIT.md - NSS public_core import classification.
NWFS_SALVAGE_COMPRESSION_TOOLS.md - salvage, stream, compression and tool roadmap.
LOG_LEVEL_AUDIT.md - legacy XDPRINTF/INI debug-level audit and recommended 1..5 policy for new code.
KERNEL_REFERENCE_AUDIT.md - Linux kernel reference imports, currently the disabled Linux 2.4.37.9 SPX implementation.
HANDOFF_AUDIT.md - current nwconn/nwbind magic-return audit, provider vocabulary and NSS message-layer references.

Layout rule

New screenshots and reference captures should live next to the feature they document. For example, FILER or SYSCON screenshots for quota behavior belong under doc/quota/, not directly in doc/.

The old plain-text files are intentionally preserved, but moved into folders so future documentation can grow without making the top-level directory hard to read.