Yest another round of manual copyedits

* doc/emacs/fixit.texi (Transpose, Spelling): Minor stylistic
changes.  Suggested by myq larson <myqlarson@gmail.com> in
emacs-manual-bugs@gnu.org.

* doc/emacs/calendar.texi (Appointments, Time Intervals): Mention
relevant Org features.  Suggested by Alex Branham
<alex.branham@gmail.com> in emacs-manual-bugs@gnu.org.

* doc/emacs/dired.texi (Operating on Files)
(Shell Commands in Dired, Image-Dired): Minor stylistic edits.
Suggested by Francis Wright <f.j.wright@live.co.uk> in
emacs-manual-bugs@gnu.org.

* doc/emacs/commands.texi (User Input): Explain "C-M-a".
Suggested by Martin Luethi <martin.luethi@geo.uzh.ch> in
emacs-manual-bugs@gnu.org.

doc/emacs/calendar.texi

@@ -1435,7 +1435,11 @@ also updated whenever the diary file (or a file it includes; see
 @ifnottex
 @ref{Fancy Diary Display})
 @end ifnottex
-is saved.
+is saved.  If you use the Org Mode and keep appointments in your Org
+agenda files, you can add those appointments to the list using the
+@code{org-agenda-to-appt} command.  @xref{Weekly/daily agenda,
+Appointment reminders,,org, The Org Manual}, for more about that
+command.
 
 @findex appt-add
 @findex appt-delete
@@ -1581,10 +1585,13 @@ variables' values are 120.
 @cindex time intervals, summing
 @cindex summing time intervals
 @cindex timeclock
+@cindex clocking time
 
   The timeclock package adds up time intervals, so you can (for
 instance) keep track of how much time you spend working on particular
-projects.
+projects.  (A more advanced alternative is to use the Org Mode's
+facilities for clocking time, @pxref{Clocking work time,,,org, The Org
+Manual}).
 
 @findex timeclock-in
 @findex timeclock-out

doc/emacs/commands.texi

@@ -56,11 +56,12 @@ characters, e.g., @kbd{C-@key{F1}} or @kbd{M-@key{LEFT}}.
 @cindex @key{ESC} replacing @key{META} key
   You can also type Meta characters using two-character sequences
 starting with @key{ESC}.  Thus, you can enter @kbd{M-a} by typing
-@kbd{@key{ESC} a}.  You can enter @kbd{C-M-a} by typing @kbd{@key{ESC}
-C-a}.  Unlike @key{META}, @key{ESC} is entered as a separate
-character.  You don't hold down @key{ESC} while typing the next
-character; instead, press @key{ESC} and release it, then enter the
-next character.  This feature is useful on certain text terminals
+@kbd{@key{ESC} a}.  You can enter @kbd{C-M-a} (holding down both
+@key{Ctrl} and @key{Alt}, then pressing @kbd{a}) by typing
+@kbd{@key{ESC} C-a}.  Unlike @key{META}, @key{ESC} is entered as a
+separate character.  You don't hold down @key{ESC} while typing the
+next character; instead, press @key{ESC} and release it, then enter
+the next character.  This feature is useful on certain text terminals
 where the @key{META} key does not function reliably.
 
 @cindex keys stolen by window manager

doc/emacs/dired.texi

@@ -727,8 +727,8 @@ this.)
 
 @vindex dired-chown-program
 The variable @code{dired-chown-program} specifies the name of the
-program to use to do the work (different systems put @command{chown}
-in different places).
+program to use to do the work.  (This variable is necessary because
+different systems put @command{chown} in different places).
 
 @findex dired-do-touch
 @kindex T @r{(Dired)}
@@ -898,7 +898,7 @@ treat it specially.
 Otherwise, if the command string contains @samp{?} surrounded by
 whitespace or @samp{`?`}, Emacs runs the shell command once
 @emph{for each file}, substituting the current file name for @samp{?}
-and @samp{`?`} each time.  You can use both @samp{?} or @samp{`?`} more
+and @samp{`?`} each time.  You can use both @samp{?} and @samp{`?`} more
 than once in the command; the same file name replaces each occurrence.
 If you mix them with @samp{*} the command signals an error.
 
@@ -1391,7 +1391,7 @@ display the next image.  Typing @key{DEL}
 the previous thumbnail and displays that instead.
 
 @vindex image-dired-external-viewer
-  To view and the image in its original size, either provide a prefix
+  To view the image in its original size, either provide a prefix
 argument (@kbd{C-u}) before pressing @key{RET}, or type
 @kbd{C-@key{RET}} (@code{image-dired-thumbnail-display-external}) to
 display the image in an external viewer.  You must first configure
@@ -1426,7 +1426,8 @@ a comment from Dired (@code{image-dired-dired-comment-files}).
   Image-Dired also provides simple image manipulation.  In the
 thumbnail buffer, type @kbd{L} to rotate the original image 90 degrees
 anti clockwise, and @kbd{R} to rotate it 90 degrees clockwise.  This
-rotation is lossless, and uses an external utility called JpegTRAN.
+rotation is lossless, and uses an external utility called
+@command{jpegtran}, which you need to install first.
 
 @node Misc Dired Features
 @section Other Dired Features

doc/emacs/fixit.texi

@@ -159,9 +159,10 @@ last two characters on the line.  So, if you catch your transposition error
 right away, you can fix it with just a @kbd{C-t}.  If you don't catch it so
 fast, you must move the cursor back between the two transposed
 characters before you type @kbd{C-t}.  If you transposed a space with
-the last character of the word before it, the word motion commands are
-a good way of getting there.  Otherwise, a reverse search (@kbd{C-r})
-is often the best way.  @xref{Search}.
+the last character of the word before it, the word motion commands
+(@kbd{M-f}, @kbd{M-b}, etc.) are a good way of getting there.
+Otherwise, a reverse search (@kbd{C-r}) is often the best way.
+@xref{Search}.
 
 @kindex C-x C-t
 @findex transpose-lines
@@ -181,22 +182,23 @@ punctuation characters between the words do not move.  For example,
   @kbd{C-M-t} (@code{transpose-sexps}) is a similar command for
 transposing two expressions (@pxref{Expressions}), and @kbd{C-x C-t}
 (@code{transpose-lines}) exchanges lines.  They work like @kbd{M-t}
-except as regards what units of text they transpose.
+except as regards the units of text they transpose.
 
   A numeric argument to a transpose command serves as a repeat count: it
-tells the transpose command to move the character (word, expression, line)
-before or containing point across several other characters (words,
-expressions, lines).  For example, @kbd{C-u 3 C-t} moves the character before
-point forward across three other characters.  It would change
-@samp{f@point{}oobar} into @samp{oobf@point{}ar}.  This is equivalent to
-repeating @kbd{C-t} three times.  @kbd{C-u - 4 M-t} moves the word
-before point backward across four words.  @kbd{C-u - C-M-t} would cancel
-the effect of plain @kbd{C-M-t}.
+tells the transpose command to move the character (or word or
+expression or line) before or containing point across several other
+characters (or words or expressions or lines).  For example, @kbd{C-u
+3 C-t} moves the character before point forward across three other
+characters.  It would change @samp{f@point{}oobar} into
+@samp{oobf@point{}ar}.  This is equivalent to repeating @kbd{C-t}
+three times.  @kbd{C-u - 4 M-t} moves the word before point backward
+across four words.  @kbd{C-u - C-M-t} would cancel the effect of plain
+@kbd{C-M-t}.
 
   A numeric argument of zero is assigned a special meaning (because
 otherwise a command with a repeat count of zero would do nothing): to
-transpose the character (word, expression, line) ending after point
-with the one ending after the mark.
+transpose the character (or word or expression or line) ending after
+point with the one ending after the mark.
 
 @node Fixing Case
 @section Case Conversion
@@ -227,9 +229,10 @@ case-convert it and go on typing.  @xref{Case}.
 
   This section describes the commands to check the spelling of a
 single word or of a portion of a buffer.  These commands only work if
-the spelling checker program Hunspell, Aspell, Ispell or Enchant is installed.
-These programs are not part of Emacs, but one of them is usually
-installed in GNU/Linux and other free operating systems.
+a spelling checker program, one of Hunspell, Aspell, Ispell or
+Enchant, is installed.  These programs are not part of Emacs, but one
+of them is usually installed in GNU/Linux and other free operating
+systems.
 @ifnottex
 @xref{Top, Aspell,, aspell, The Aspell Manual}.
 @end ifnottex