@c This is part of the Emacs manual.
-@c Copyright (C) 2004-2011 Free Software Foundation, Inc.
+@c Copyright (C) 2004-2013 Free Software Foundation, Inc.
@c See file emacs.texi for copying conditions.
@c
@c This file is included either in emacs-xtra.texi (when producing the
@c printed version) or in the main Emacs manual (for the on-line version).
@node Picture Mode
-@chapter Editing Pictures
+@section Editing Pictures
@cindex pictures
@cindex making pictures out of text characters
@findex picture-mode
@end menu
@node Basic Picture
-@section Basic Editing in Picture Mode
+@subsection Basic Editing in Picture Mode
@findex picture-forward-column
@findex picture-backward-column
@code{picture-move-up}, which can either insert spaces or convert tabs
as necessary to make sure that point stays in exactly the same column.
@kbd{C-e} runs @code{picture-end-of-line}, which moves to after the last
-nonblank character on the line. There is no need to change @kbd{C-a},
-as the choice of screen model does not affect beginnings of
-lines.
+nonblank character on the line. @kbd{C-a} runs
+@code{picture-beginning-of-line}. (The choice of screen model does not
+affect beginnings of lines; the only extra thing this command does is
+update the current picture column to 0.)
@findex picture-newline
Insertion of text is adapted to the quarter-plane screen model
Picture}).
@node Insert in Picture
-@section Controlling Motion after Insert
+@subsection Controlling Motion after Insert
@findex picture-movement-up
@findex picture-movement-down
C-b} (@code{picture-motion-reverse}) moves in the opposite direction.
@node Tabs in Picture
-@section Picture Mode Tabs
+@subsection Picture Mode Tabs
@kindex M-TAB @r{(Picture mode)}
@findex picture-tab-search
With no argument, it moves to a point underneath the next
``interesting'' character that follows whitespace in the previous
nonblank line. ``Next'' here means ``appearing at a horizontal position
-greater than the one point starts out at.'' With an argument, as in
+greater than the one point starts out at''. With an argument, as in
@kbd{C-u M-@key{TAB}}, this command moves to the next such interesting
character in the current line. @kbd{M-@key{TAB}} does not change the
text; it only moves point. ``Interesting'' characters are defined by
@code{indent-tabs-mode} to @code{nil}.
@node Rectangles in Picture
-@section Picture Mode Rectangle Commands
+@subsection Picture Mode Rectangle Commands
@cindex rectangles and Picture mode
@cindex Picture mode and rectangles