Minor doc improvements

doc/org.texi

@@ -3837,6 +3837,7 @@ the statistics cookie become ambiguous.  Set the property
 @code{COOKIE_DATA} to either @samp{checkbox} or @samp{todo} to resolve
 this issue.
 
+@vindex org-hierarchical-todo-statistics
 If you would like to have the statistics cookie count any TODO entries in the
 subtree (not just direct children), confgure the variable
 @code{org-hierarchical-todo-statistics}.  To do this for a single subtree,
@@ -3900,6 +3901,7 @@ checked.
 @cindex statistics, for checkboxes
 @cindex checkbox statistics
 @cindex property, COOKIE_DATA
+@vindex org-hierarchical-checkbox-statistics
 The @samp{[2/4]} and @samp{[1/3]} in the first and second line are cookies
 indicating how many checkboxes present in this entry have been checked off,
 and the total number of checkboxes present.  This can give you an idea on how
@@ -10318,9 +10320,9 @@ block is updated.
 
 Some people find it noisy and distracting that the Org headlines start with a
 potentially large number of stars, and that text below the headlines is not
-indented.  While this is no problem when writing a book where the outline
-headings are really section headlines, in a more list-oriented outline,
-indented structure is a lot cleaner:
+indented.  While this is no problem when writing a @emph{book-like} document
+where the outline headings are really section headings, in a more
+@emph{list-oriented} outline, indented structure is a lot cleaner:
 
 @example
 @group
@@ -10335,19 +10337,19 @@ more text                        |          more text
 @end example
 
 @noindent
-If you are using Emacs 23 and at least version 6.29 of Org, this kind of view
-can be achieved dynamically at display time using @code{org-indent-mode}.  In
-this minor mode, all lines are prefixed for display with the necessary amount
-of space.  Also headlines are prefixed with additional stars, so that the
-amount of indentation shifts by two@footnote{See the variable
-@code{org-indent-indentation-per-level}.}  spaces per level.  All headline
-stars but the last one are made invisible using the @code{org-hide}
-face@footnote{Turning on @code{org-indent-mode} sets
-@code{org-hide-leading-stars} to @code{t} and @code{org-adapt-indentation} to
-@code{nil}.} - see below under @samp{2.} for more information on how this
-works.  You can turn on @code{org-indent-mode} for all files by customizing
-the variable @code{org-startup-indented}, or you can turn it on for
-individual files using
+If you are using at least Emacs 23.1.50.3 and version 6.29 of Org, this kind
+of view can be achieved dynamically at display time using
+@code{org-indent-mode}.  In this minor mode, all lines are prefixed for
+display with the necessary amount of space.  Also headlines are prefixed with
+additional stars, so that the amount of indentation shifts by
+two@footnote{See the variable @code{org-indent-indentation-per-level}.}
+spaces per level.  All headline stars but the last one are made invisible
+using the @code{org-hide} face@footnote{Turning on @code{org-indent-mode}
+sets @code{org-hide-leading-stars} to @code{t} and
+@code{org-adapt-indentation} to @code{nil}.} - see below under @samp{2.} for
+more information on how this works.  You can turn on @code{org-indent-mode}
+for all files by customizing the variable @code{org-startup-indented}, or you
+can turn it on for individual files using
 
 @example
 #+STARTUP: indent