(Advanced Calendar/Diary Usage): Update menu.

(Diary Customizing): Holidays may be in the buffer or mode line.
Move diary-print-entries to the "Diary Display" section.
(Diary Display): New section, split out from "Fancy Diary Display".
Explain the limitations of simple display, and how to print it.

doc/emacs/cal-xtra.texi

@@ -20,9 +20,9 @@ diary suit your personal tastes.
 * Time Display Format::    Changing the format.
 * Diary Customizing::      Defaults you can set.
 * Non-Gregorian Diary::    Diary entries based on other calendars.
-* Fancy Diary Display::    Enhancing the diary display, sorting entries,
-                             using included diary files.
-* Sexp Diary Entries::     Fancy things you can do.
+* Diary Display::          A choice of ways to display the diary.
+* Fancy Diary Display::    Sorting diary entries, using included diary files.
+* Sexp Diary Entries::     More flexible diary entries.
 @end menu
 
 @node Calendar Customizing
@@ -332,11 +332,11 @@ solar functions).
 @subsection Customizing the Diary
 
 @vindex diary-show-holidays-flag
-  Ordinarily, the mode line of the diary window indicates any holidays
-that fall on the date of the diary entries.  The process of checking for
-holidays can be slow, depending on the defined holidays.  In that case,
-setting @code{diary-show-holidays-flag} to @code{nil} will speed up the
-diary display.
+  Ordinarily, the diary window indicates any holidays that fall on the
+date of the diary entries, either in the mode line or the buffer itself.
+The process of checking for holidays can be slow, depending on the
+defined holidays.  In that case, setting @code{diary-show-holidays-flag}
+to @code{nil} will speed up the diary display.
 
 @vindex diary-number-of-entries
   The variable @code{diary-number-of-entries} controls the number of
@@ -351,18 +351,6 @@ current date's and the next day's diary entries appear Monday through
 Thursday, Friday through Monday's entries appear on Friday, while on
 Saturday only that day's entries appear.
 
-@vindex diary-print-entries-hook
-@findex diary-print-entries
-  The variable @code{diary-print-entries-hook} is a normal hook run
-after preparation of a temporary buffer containing just the diary
-entries currently visible in the diary buffer.  (The other, irrelevant
-diary entries are really absent from the temporary buffer; in the diary
-buffer, they are merely hidden.)  The default value of this hook does
-the printing with the command @code{lpr-buffer}.  If you want to use a
-different command to do the printing, just change the value of this
-hook.  Other uses might include, for example, rearranging the lines into
-order by day and time.
-
 @vindex diary-date-forms
   You can customize the form of dates in your diary file by setting the
 variable @code{diary-date-forms}.  This variable is a list of patterns
@@ -529,41 +517,85 @@ non-Gregorian date, the @samp{monthly} commands for the given
 non-Gregorian day-within-month in every month, and the @samp{yearly}
 commands for the given non-Gregorian day and month in every year.
 
-@node Fancy Diary Display
-@subsection Fancy Diary Display
+@node Diary Display
+@subsection Diary Display
 @vindex diary-display-function
 @findex diary-simple-display
 @findex diary-fancy-display
 @cindex diary buffer
 
-  Diary display works by preparing the diary buffer and then running the
-function specified by the variable @code{diary-display-function}.  The
-default value (@code{diary-simple-display}) hides the irrelevant diary
-entries and then displays the buffer.  The alternative
+  Diary display works by preparing the list of diary entries and then
+running the function specified by the variable
+@code{diary-display-function}.  The default value
 @code{diary-fancy-display} displays diary entries and holidays by
 copying them into a special buffer that exists only for the sake of
-display.  Copying to a separate buffer provides an opportunity to change
-the displayed text to make it prettier---for example, to sort the
-entries by the dates they apply to.
-
-  As with simple diary display, you can print a hard copy of the buffer
-with @code{diary-print-entries}.  To print a hard copy of a day-by-day
-diary for a week, position point on Sunday of that week, type
-@kbd{7 d}, and then do @kbd{M-x diary-print-entries}.  As usual, the
-inclusion of the holidays slows down the display slightly; you can speed
-things up by setting the variable @code{diary-show-holidays-flag} to
-@code{nil}.
+display.  Copying diary entries to a separate buffer provides an
+opportunity to change the displayed text to make it prettier---for
+example, to sort the entries by the dates they apply to.
 
 @vindex diary-list-include-blanks
-  Ordinarily, the fancy diary buffer does not show days for which there are
-no diary entries, even if that day is a holiday.  If you want such days to be
-shown in the fancy diary buffer, set the variable
+  Ordinarily, the fancy diary buffer does not show days for which there
+are no diary entries, even if that day is a holiday.  If you want such
+days to be shown in the fancy diary buffer, set the variable
 @code{diary-list-include-blanks} to @code{t}.@refill
 
+  The alternative method @code{diary-simple-display} displays the actual
+diary buffer, and uses invisible text to hide entries that don't apply.
+Holidays are shown in the mode line.  The advantage of this method is
+that you can edit the buffer and save your changes directly to the diary
+file.  This method is not as flexible as the fancy method, however.  For
+example, it cannot sort entries.  Another disadvantage is that invisible
+text can be confusing.  For example, if you copy a region of text in
+order to paste it elsewhere, invisible text may be included.  Similarly,
+since the diary buffer as you see it is an illusion, simply printing the
+buffer may not print what you see on your screen.
+
+@vindex diary-print-entries-hook
+@findex diary-print-entries
+  For this reason, there is a special command to print hard copy of the
+diary buffer @emph{as it appears}; this command is @kbd{M-x
+diary-print-entries}.  It works with either display method, although
+with the fancy display you can also print the buffer like any other.  To
+print a hard copy of a day-by-day diary for a week, position point on
+the first day of the week, type @kbd{7 d}, and then do @kbd{M-x
+diary-print-entries}.  As usual, the inclusion of the holidays slows
+down the display slightly; you can speed things up by setting the
+variable @code{diary-show-holidays-flag} to @code{nil}.
+
+  This command prepares a temporary buffer that contains only the diary
+entries currently visible in the diary buffer.  Unlike with the simple
+display, the other irrelevant entries are really absent, not just
+hidden.  After preparing the buffer, it runs the hook
+@code{diary-print-entries-hook}.  The default value of this hook sends
+the data directly to the printer with the command @code{lpr-buffer}
+(@pxref{Printing}).  If you want to use a different command to do the
+printing, just change the value of this hook.  Other uses might include,
+for example, rearranging the lines into order by day and time.
+
+  You can edit the diary entries as they appear in the simple diary
+window, but it is important to remember that the buffer displayed
+contains the @emph{entire} diary file, with portions of it concealed
+from view.  This means, for instance, that the @kbd{C-f}
+(@code{forward-char}) command can put point at what appears to be the
+end of the line, but what is in reality the middle of some concealed
+line.
+
+  @emph{Be careful when editing the diary entries in the simple display!}
+Inserting additional lines or adding/deleting characters in the middle
+of a visible line cannot cause problems, but editing at the end of a
+line may not do what you expect.  Deleting a line may delete other
+invisible entries that follow it.  Before editing the simple diary
+buffer, it is best to display the entire file with @kbd{s}
+(@code{diary-show-all-entries}).
+
+@node Fancy Diary Display
+@subsection Fancy Diary Display
+
+The following features only work with the fancy diary display.
+
 @cindex sorting diary entries
-  If you use the fancy diary display, you can use the normal hook
-@code{diary-list-entries-hook} to sort each day's diary entries by their
-time of day.  Here's how:
+  You can use the normal hook @code{diary-list-entries-hook} to sort
+each day's diary entries by their time of day.  Here's how:
 
 @findex diary-sort-entries
 @example
@@ -576,10 +608,9 @@ time of day according to their times.  Diary entries without times come
 first within each day.
 
 @vindex diary-include-string
-  Fancy diary display also has the ability to process included diary
-files.  This permits a group of people to share a diary file for events
-that apply to all of them.  Lines in the diary file starting with
-@code{diary-include-string}:
+  Your main diary file can include other files.  This permits a group of
+people to share a diary file for events that apply to all of them.
+Lines in the diary file starting with @code{diary-include-string}:
 
 @smallexample
 #include "@var{filename}"
@@ -602,7 +633,7 @@ include facility:
 @end smallexample
 
 The include mechanism works only with the fancy diary display, because
-ordinary diary display shows the entries directly from your diary file.
+simple diary display shows the entries directly from your diary file.
 
 @node Sexp Diary Entries
 @subsection Sexp Entries and the Fancy Diary Display
@@ -612,8 +643,8 @@ ordinary diary display shows the entries directly from your diary file.
   Sexp diary entries allow you to do more than just have complicated
 conditions under which a diary entry applies.  Sexp entries should be
 preceded by @code{diary-sexp-entry-symbol} (default @samp{%%}) in the
-diary file.  If you use the fancy diary display, sexp entries can
-generate the text of the entry depending on the date itself.
+diary file.  With the fancy diary display, sexp entries can generate the
+text of the entry depending on the date itself.
 
 For example, an anniversary diary entry can insert
 the number of years since the anniversary date into the text of the