I fixed the -V interaction of safemode, but just documented the persistent
effects of -B (because the originally envisioned fix looked hard and better -B
documentation would have prevented the problems I had).
Later patches in this series fix some other small documentation issues, some
of which have caused me confusion over the years.
One patch does a very slight code cleanup in main (all the comment typos and
indent bugs I noticed while working on other things).