* syntax.texi (Position Parse): Document rationale for ignored

* syntax.texi (Position Parse): Document rationale for ignored
arguments to syntax-ppss-flush-cache.

* processes.texi (Input to Processes): Mark PROCESS arg to
process-running-child-p as optional.
(Network Options): Document NO-ERROR arg to
set-network-process-option.

* buffers.texi (Indirect Buffers): Mark clone-indirect-buffer as a
command.

* searching.texi (POSIX Regexps): Mark posix-search-forward and
posix-search-backward as commands.

* os.texi (Killing Emacs): Mark kill-emacs as a command.
(Suspending Emacs): Mark suspend-emacs as a command.
(Processor Run Time): Mark emacs-uptime and emacs-init-time as
commands.
(Terminal Output): Remove obsolete function baud-rate.  Document
TERMINAL arg for send-string-to-terminal.

* nonascii.texi (Terminal I/O Encoding): Document TERMINAL arg for
terminal-coding-system and set-terminal-coding-system.
(Explicit Encoding): Mark DESTINATION arg of decode-coding-region
as optional.
(Character Sets): Document RESTRICTION arg of char-charset.
(Character Codes): Mark POS argument to get-byte as optional.

* minibuf.texi (Minibuffer Misc): Document ARGS arg for
minibuffer-message.

* files.texi (Create/Delete Dirs): Mark make-directory and
delete-directory as commands.

* abbrevs.texi (Abbrev Tables): Fix arglist for make-abbrev-table.

* text.texi (Base 64): Mark base64-decode-string and
base64-encode-string as commands.
(Columns): Mark move-to-column as a command.
(Mode-Specific Indent): Document RIGID arg to
indent-for-tab-command.
(Region Indent): Mark TO-COLUMN arg to indent-region as optional.
Mark indent-code-rigidly as a command.
(Substitution): Mark translate-region as a command.

* frames.texi (Size and Position): Remove obsolete functions
screen-height and screen-width.