README

help: don't try to render a section on sub-topics

This patch subtly changes the behavior of the parsing of "X.Y" values
to not set the "section" variable when rendering a known sub-topic.
Previously, "section" would be the same as the sub-topic name. This
required the sub-topic RST to have a section named the same as the
sub-topic name.

When I made this change, the descriptions from help.internalstable
started being rendered in command line output. This didn't look correct
to me, as it didn't match the formatting of main help pages. I
corrected this by moving the top section to help.internalstable and
changing the section levels of all the "internals" topics.

The end result is that "internals" topics now match the rendering of
main topics on both the CLI and HTML. And, "internals" topics no longer
require a main section matching the name of the topic.

Mercurial
=========

Mercurial is a fast, easy to use, distributed revision control tool
for software developers.

Basic install:

 $ make            # see install targets
 $ make install    # do a system-wide install
 $ hg debuginstall # sanity-check setup
 $ hg              # see help

Running without installing:

 $ make local      # build for inplace usage
 $ ./hg --version  # should show the latest version

See https://mercurial-scm.org/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.