Be more systematic about using "@." (not ".") at end of sentence that
ends in a capital letter, and about appending "@:" after non-ends of
sentences that end in a lower case letter followed by "." followed by
whitespace. Omit unnecessary use of "@:" and "@.". Similarly for "?"
and "!". Be more consistent about putting a comma after "i.e." and
"e.g."; this is the typical American style and it's easier to code in
Texinfo.
Fixes: debbugs:12973
Plus miscellaneous minor speling fixes in other manual files.
* doc/emacs/files.texi (File Names, Visiting, Interlocking): Copyedits.
(Backup Copying): backup-by-copying-when-mismatch is now t.
(Customize Save): Fix description of require-final-newline.
(Reverting): Note that revert-buffer can't be undone. Mention VC.
(Auto Save Control): Clarify.
(File Archives): Add 7z.
(Remote Files): ange-ftp-make-backup-files defaults to nil.
* doc/emacs/arevert-xtra.texi (Autorevert): Copyedits.
* doc/emacs/basic.texi (Inserting Text): Add xref to Completion. Add
ucs-insert example, and document prefix argument.
(Moving Point): Fix introduction; C-f/C-b are no longer equivalent
to left/right. Tweak left-char and right-char descriptions.
M-left and M-right are now bound to left-word/right-word.
(Erasing): Document delete-forward-char.
* doc/emacs/commands.texi (User Input): Define "input event" more clearly.
(Keys): Add xref to Echo Area.
(Commands): Clarify relation between commands and functions.
* doc/emacs/entering.texi (Entering Emacs): Define "startup screen".
Document window-splitting behavior with command-line inputs.
(Exiting): Remove obsolete paragraph about shells without suspend
functionality.
* doc/emacs/frames.texi (Non-Window Terminals): Index just "text-only
terminal", which is used throughout the manual now.
* doc/emacs/screen.texi (Screen, Menu Bar): Copyedits.
(Point): Remove duplicate paragraph on cursors, also in Screen.
(Mode Line): Trailing dashes no longer shown on X displays.
directly, rather than in the context of ASCII. Move description of
special properties of modifier key to new Modifier Keys node.
(Keys): Copyedit.
(Text Characters): Delete node. Multibyte is the default nowadays, and
the node contents are obsolete.
