message read thusly:
Finish what I began in r101464, whose log message read partially as
such:
In VCWS 2e, begin the work of distinguishing between programs,
commands, and subcommands refered to informationally (using <command>)
and same invocations of those at a command-line (using <userinput>).
To establish a clear policy, this meant rewording some sections to
avoid referring ambiguously to a subcommand plus a particular
command-line option. Sometimes the resolution was to create a
command-line invocable string; sometimes it was to refer to the option
in the prose around the named subcommand.
While here, fixup some other obvious problems such as missing or
misplaced <replaceable> tags.
* src/en/book/ch01-fundamental-concepts.xml,
* src/en/book/ch04-branching-and-merging.xml,
* src/en/book/ch08-embedding-svn.xml
