- macros/README.md
- Add ### MOD section documenting the previously-undocumented MOD
macro (src_a, src_b, dest, scratch → sdiv/msub composition).
Canonical apple-linux-convergence.S has defined MOD since at least
the sync-script enforcement work (3144bc6); README drifted from it.
- Rewrite variadic cross-reference to link BOTH more/varargs/README.md
(the dedicated chapter) and more/apple_silicon/README.md (the
Apple/Linux divergence discussion). Original pointed only at
apple_silicon, which undersold the standalone varargs chapter.
- Grammar: "Thank you to u/TNorthover for nudge" → "for the nudge".
- not_written_yet.md
- Capitalize GitHub.
Rejected alternatives: (a) removing MOD from canonical instead of
documenting it — rejected per author direction, MOD is useful; (b)
repointing the variadic link to varargs only — rejected, the Apple
Silicon page's divergence discussion remains directly relevant in the
macros context.
Proofing status (NAS): LICENSE.md and not_written_yet.md flipped to
[reviewed]; macros/README.md flipped to [revised].
