* doc/emacs/killing.texi (Deletion): Document negative prefix arg to M-SPC.
* doc/emacs/regs.texi (Text Registers): C-x r i does not activate the mark.
(Bookmarks): Document new default bookmark location.
* 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.
`comint-previous-matching-input' to
`comint-history-isearch-backward-regexp'.
Unbind `M-s' to allow global key binding `M-s'.
Add menu items for `comint-history-isearch-backward' and
`comint-history-isearch-backward-regexp'. (Bug#3746)
