updated;

--- a/doc-src/System/basics.tex	Thu Sep 27 12:24:40 2001 +0200
+++ b/doc-src/System/basics.tex	Thu Sep 27 12:25:09 2001 +0200
@@ -374,49 +374,48 @@
 
 \begin{itemize}
 \item \texttt{none} is just a pass-through to plain \texttt{isabelle}. Thus
-  \texttt{Isabelle} basically becomes an alias for \texttt{isabelle}.
-  
+  \texttt{Isabelle} basically becomes an alias for \texttt{isabelle}.  This is
+  the factory default.
+
 \item \texttt{xterm} refers to a simple \textsl{xterm} based interface which
   is part of the Isabelle distribution.
   
+  This interface runs \texttt{isabelle} within its own \textsl{xterm} window.
+  Usually, display of mathematical symbols from the Isabelle font is enabled
+  as well (see \S\ref{sec:tool-installfonts} for X11 font configuration
+  issues).  Furthermore, different kinds of identifiers in logical terms are
+  highlighted appropriately, e.g.\ free variables in bold and bound variables
+  underlined.  There are some more options available, just pass
+  ``\texttt{-?}'' to get the usage printed.
+  
 \item \texttt{emacs} refers to David Aspinall's \emph{Isamode}\index{user
     interface!Isamode} for emacs.  Isabelle just provides a wrapper for this,
   the actual Isamode distribution is available elsewhere \cite{isamode}.
   
 \item Proof~General~\cite{proofgeneral}\index{user interface!Proof General} is
-  distributed with separate interface wrapper scripts for Isabelle.  See below
-  for more details.
-\end{itemize}
-
-The factory default for \texttt{ISABELLE_INTERFACE} is \texttt{xterm}.  This
-interface runs \texttt{isabelle} within its own \textsl{xterm} window.
-Usually, display of mathematical symbols from the Isabelle font is enabled as
-well (see \S\ref{sec:tool-installfonts} for X11 font configuration issues).
-Furthermore, different kinds of identifiers in logical terms are highlighted
-appropriately, e.g.\ free variables in bold and bound variables underlined.
-There are some more options available, just pass ``\texttt{-?}'' to get the
-usage printed.
+  an advanced interface for common theorem proving environments.  It has
+  become the de-facto standard for Isabelle recently, supporting both the old
+  ML top-level of classic Isabelle and the more convenient Isabelle/Isar
+  interpreter loop.  The Proof~General distributions includes separate
+  interface wrapper scripts (in \texttt{ProofGeneral/isa} and
+  \texttt{ProofGeneral/isar}).  The canonical settings for Isabelle/Isar are
+  as follows:
+  \begin{ttbox}
+ISABELLE_INTERFACE=\$ISABELLE_HOME/contrib/ProofGeneral/isar/interface
+PROOFGENERAL_OPTIONS=""
+  \end{ttbox}
+  Thus \texttt{Isabelle} would automatically invoke Emacs with proper setup of
+  the Proof~General Lisp packages.  There are some options available, such as
+  \texttt{-l} for passing the logic image to be used, or \texttt{-m} to tune
+  the standard print mode.
+  
+  \medskip Note that the world may be also seen the other way round: Emacs may
+  be started first (with proper setup of Proof~General mode), and
+  \texttt{isabelle} run from within.  This requires further Emacs Lisp
+  configuration, see the Proof~General documentation \cite{proofgeneral} for
+  more information.
 
-\medskip Proof~General\index{user interface!Proof General} is a much more
-advanced interface.  It supports both classic Isabelle (as
-\texttt{ProofGeneral/isa}) and Isabelle/Isar (as \texttt{ProofGeneral/isar}).
-Note that the latter is inherently more robust.
-
-Using the Isabelle interface wrapper scripts as provided by Proof~General, a
-typical setup for Isabelle/Isar would be like this:
-\begin{ttbox}
-ISABELLE_INTERFACE=\$ISABELLE_HOME/contrib/ProofGeneral/isar/interface
-PROOFGENERAL_OPTIONS="-u false"
-\end{ttbox}
-Thus \texttt{Isabelle} would automatically invoke Emacs with proper setup of
-the Proof~General Lisp packages.  There are some options available, such as
-\texttt{-l} for passing the logic image to be used.
-
-\medskip Note that the world may be also seen the other way round: Emacs may
-be started first (with proper setup of Proof~General mode), and
-\texttt{isabelle} run from within.  This requires further Emacs Lisp
-configuration, see the Proof~General documentation \cite{proofgeneral} for
-more information.
+\end{itemize}
 
 %%% Local Variables:
 %%% mode: latex

--- a/doc-src/System/present.tex	Thu Sep 27 12:24:40 2001 +0200
+++ b/doc-src/System/present.tex	Thu Sep 27 12:25:09 2001 +0200
@@ -31,8 +31,8 @@
 logic.  There is a graph browser Java applet embedded in the generated HTML
 pages, and also a stand-alone application that allows browsing theory graphs
 without having to start a WWW browser first.  The latter version also includes
-features such as generating {\sc PostScript} files, which are not available in
-the applet version.  See \S\ref{sec:browse} for further information.
+features such as generating Postscript files, which are not available in the
+applet version.  See \S\ref{sec:browse} for further information.
 
 \medskip
 
@@ -101,8 +101,7 @@
 There is a separate \texttt{mkdir} tool to provide easy setup of all this,
 with only minimal manual editing required.
 \begin{ttbox}
-isatool mkdir -d Foo
-edit Foo/ROOT.ML
+isatool mkdir Foo
 isatool make
 \end{ttbox}
 See \S\ref{sec:tool-mkdir} for more information on preparing Isabelle session
@@ -201,13 +200,12 @@
   
 \item[Open \dots] Open a new graph file.
   
-\item[Export to PostScript] Outputs the current graph in {\sc
-    PostScript} format, appropriately scaled to fit on one single
-  sheet of paper.  The resulting file can be printed directly.
+\item[Export to PostScript] Outputs the current graph in Postscript format,
+  appropriately scaled to fit on one single sheet of paper.  The resulting
+  file can be printed directly.
   
-\item[Export to EPS] Outputs the current graph in Encapsulated {\sc
-    PostScript} format. The resulting file can be included in other
-  documents.
+\item[Export to EPS] Outputs the current graph in Encapsulated Postscript
+  format. The resulting file can be included in other documents.
 
 \item[Quit] Quit the graph browser.
 
@@ -260,6 +258,7 @@
     -c           cleanup -- be aggressive in removing old stuff
     -o FORMAT    specify output format: dvi (default), dvi.gz, ps,
                  ps.gz, pdf
+    -v           be verbose
 
   Prepare the theory session document in DIR (default 'document')
   producing the specified output format.
@@ -360,8 +359,11 @@
 \label{sec:tool-mkdir}
 
 The \tooldx{mkdir} utility prepares Isabelle session source directories,
-including a sensible default setup of \texttt{IsaMakefile}, \texttt{ROOT.ML}
-and an optional \texttt{document} directory.  Its usage is:
+including a sensible default setup of \texttt{IsaMakefile}, \texttt{ROOT.ML},
+and a \texttt{document} directory with a minimal \texttt{root.tex} that is
+sufficient print all theories of the session (in the order of appearance); see
+\S\ref{sec:tool-document} for further information on Isabelle document
+preparation.  The usage of \texttt{mkdir} is:
 \begin{ttbox}
 Usage: mkdir [OPTIONS] [LOGIC] NAME
 
@@ -369,9 +371,9 @@
     -I FILE      alternative IsaMakefile output
     -P           include parent logic target
     -b           setup build mode (session outputs heap image)
-    -d           setup document
+    -q           quiet mode
 
-  Prepare session directory, including IsaMakefile, document etc.
+  Prepare session directory, including IsaMakefile and document source,
   with parent LOGIC (default ISABELLE_LOGIC=\$ISABELLE_LOGIC)
 \end{ttbox}
 
@@ -405,10 +407,8 @@
 \S\ref{sec:tool-usedir} for further information on \emph{build mode} vs.\ 
 \emph{example mode} of the \texttt{usedir} utility.
 
-\medskip The \texttt{-d} option creates a \texttt{document} directory with a
-minimal \texttt{root.tex} file, which is sufficient to get all theories pretty
-printed in the order of appearance.  See \S\ref{sec:tool-document} for further
-information on Isabelle document preparation.
+\medskip The \texttt{-q} enables quiet mode, suppressing further notes on how
+to proceed.
 
 
 \subsection*{Examples}
@@ -416,7 +416,8 @@
 The standard setup of a single ``example session'' based on the default logic,
 with proper document generation is generated like this:
 \begin{ttbox}
-isatool mkdir -d Foo
+isatool mkdir Foo
+isatool make
 \end{ttbox}
 \noindent The theory sources should be put into the \texttt{Foo} directory, and its
 \texttt{ROOT.ML} should be edited to load all required theories.  Invoking
@@ -431,6 +432,7 @@
 The \tooldx{usedir} utility builds object-logic images, or runs example
 sessions based on existing logics. Its usage is:
 \begin{ttbox}
+
 Usage: usedir [OPTIONS] LOGIC NAME
 
   Options are:
@@ -441,8 +443,10 @@
     -d FORMAT    build document as FORMAT (default false)
     -i BOOL      generate theory browser information (default false)
     -m MODE      add print mode for output
+    -p LEVEL     set level of detail for proof objects
     -r           reset session path
     -s NAME      override session NAME
+    -v BOOL      be verbose (default false)
 
   Build object-logic or run examples. Also creates browsing
   information (HTML etc.) according to settings.
@@ -500,6 +504,13 @@
 easier debugging of {\LaTeX} errors, for example.  Note that a copy of the
 Isabelle style files will be placed in \texttt{PATH} as well.
 
+\medskip The \texttt{-p} option determines the level of detail for internal
+proof objects, see also the \emph{Isabelle Reference
+  Manual}~\cite{isabelle-ref}.
+
+\medskip The \texttt{-v} option causes additional information to be printed
+during while running the session, notably the location of prepared documents.
+
 \medskip Any \texttt{usedir} session is named by some \emph{session
   identifier}. These accumulate, documenting the way sessions depend on
 others. For example, consider \texttt{Pure/FOL/ex}, which refers to the

--- a/doc-src/TutorialI/tutorial.ind	Thu Sep 27 12:24:40 2001 +0200
+++ b/doc-src/TutorialI/tutorial.ind	Thu Sep 27 12:25:09 2001 +0200
@@ -1,33 +1,33 @@
 \begin{theindex}
 
-  \item \ttall, \bold{189}
-  \item \texttt{?}, \bold{189}
-  \item \isasymuniqex, \bold{189}
-  \item \ttuniquex, \bold{189}
-  \item {\texttt {\&}}, \bold{189}
-  \item \verb$~$, \bold{189}
-  \item \verb$~=$, \bold{189}
-  \item \ttor, \bold{189}
+  \item \ttall, \bold{187}
+  \item \texttt{?}, \bold{187}
+  \item \isasymuniqex, \bold{187}
+  \item \ttuniquex, \bold{187}
+  \item {\texttt {\&}}, \bold{187}
+  \item \verb$~$, \bold{187}
+  \item \verb$~=$, \bold{187}
+  \item \ttor, \bold{187}
   \item \texttt{[]}, \bold{7}
   \item \texttt{\#}, \bold{7}
-  \item \texttt{\at}, \bold{8}, 189
-  \item \isasymnotin, \bold{189}
-  \item \verb$~:$, \bold{189}
-  \item \isasymInter, \bold{189}
-  \item \isasymUnion, \bold{189}
-  \item \isasyminverse, \bold{189}
-  \item \verb$^-1$, \bold{189}
-  \item \isactrlsup{\isacharasterisk}, \bold{189}
-  \item \verb$^$\texttt{*}, \bold{189}
-  \item \isasymAnd, \bold{10}, \bold{189}
-  \item \ttAnd, \bold{189}
+  \item \texttt{\at}, \bold{8}, 187
+  \item \isasymnotin, \bold{187}
+  \item \verb$~:$, \bold{187}
+  \item \isasymInter, \bold{187}
+  \item \isasymUnion, \bold{187}
+  \item \isasyminverse, \bold{187}
+  \item \verb$^-1$, \bold{187}
+  \item \isactrlsup{\isacharasterisk}, \bold{187}
+  \item \verb$^$\texttt{*}, \bold{187}
+  \item \isasymAnd, \bold{10}, \bold{187}
+  \item \ttAnd, \bold{187}
   \item \isasymrightleftharpoons, 24
   \item \isasymrightharpoonup, 24
   \item \isasymleftharpoondown, 24
   \item \emph {$\Rightarrow $}, \bold{3}
-  \item \ttlbr, \bold{189}
-  \item \ttrbr, \bold{189}
-  \item \texttt {\%}, \bold{189}
+  \item \ttlbr, \bold{187}
+  \item \ttrbr, \bold{187}
+  \item \texttt {\%}, \bold{187}
   \item \texttt {;}, \bold{5}
   \item \isa {()} (constant), 22
   \item \isa {+} (tactical), 83
@@ -46,14 +46,14 @@
   \item abandoning a proof, \bold{11}
   \item abandoning a theory, \bold{14}
   \item \isa {abs} (constant), 135
-  \item \texttt {abs}, \bold{189}
+  \item \texttt {abs}, \bold{187}
   \item absolute value, 135
   \item \isa {add} (modifier), 27
   \item \isa {add_ac} (theorems), 134
   \item \isa {add_assoc} (theorem), \bold{134}
   \item \isa {add_commute} (theorem), \bold{134}
   \item \isa {add_mult_distrib} (theorem), \bold{133}
-  \item \texttt {ALL}, \bold{189}
+  \item \texttt {ALL}, \bold{187}
   \item \isa {All} (constant), 93
   \item \isa {allE} (theorem), \bold{65}
   \item \isa {allI} (theorem), \bold{64}
@@ -63,8 +63,8 @@
   \item \isa {arith} (method), 21, 131
   \item arithmetic operations
     \subitem for \protect\isa{nat}, 21
-  \item \textsc {ascii} symbols, \bold{189}
-  \item associative-commutative function, 158
+  \item \textsc {ascii} symbols, \bold{187}
+  \item associative-commutative function, 156
   \item \isa {assumption} (method), 53
   \item assumptions
     \subitem of subgoal, 10
@@ -105,7 +105,7 @@
   \item \isa {case} expressions, 3, 4, 16
   \item case distinctions, 17
   \item case splits, \bold{29}
-  \item \isa {case_tac} (method), 17, 85
+  \item \isa {case_tac} (method), 17, 85, 139
   \item \isa {clarify} (method), 75, 76
   \item \isa {clarsimp} (method), 75, 76
   \item \isa {classical} (theorem), \bold{57}
@@ -123,8 +123,8 @@
     \subitem of subgoal, 10
   \item conditional expressions, \see{\isa{if} expressions}{1}
   \item conditional simplification rules, 29
-  \item \isa {cong} (attribute), 158
-  \item congruence rules, \bold{157}
+  \item \isa {cong} (attribute), 156
+  \item congruence rules, \bold{155}
   \item \isa {conjE} (theorem), \bold{55}
   \item \isa {conjI} (theorem), \bold{52}
   \item \isa {Cons} (constant), 7
@@ -134,6 +134,7 @@
   \item converse
     \subitem of a relation, \bold{96}
   \item \isa {converse_iff} (theorem), \bold{96}
+  \item CTL, 105--110, 171--173
 
   \indexspace
 
@@ -141,6 +142,7 @@
   \item datatypes, 15--20
     \subitem and nested recursion, 38, 42
     \subitem mutually recursive, 36
+    \subitem nested, 160
   \item \isacommand {defer} (command), 14, 84
   \item Definitional Approach, 24
   \item definitions, \bold{23}
@@ -190,7 +192,7 @@
   \item Euclid's algorithm, 85--88
   \item even numbers
     \subitem defining inductively, 111--115
-  \item \texttt {EX}, \bold{189}
+  \item \texttt {EX}, \bold{187}
   \item \isa {Ex} (constant), 93
   \item \isa {exE} (theorem), \bold{66}
   \item \isa {exI} (theorem), \bold{66}
@@ -199,7 +201,7 @@
     \subitem for functions, \bold{93, 94}
     \subitem for records, 143
     \subitem for sets, \bold{90}
-  \item \ttEXU, \bold{189}
+  \item \ttEXU, \bold{187}
 
   \indexspace
 
@@ -219,8 +221,9 @@
   \item \isa {fst} (constant), 22
   \item function types, 3
   \item functions, 93--95
+    \subitem partial, 162
     \subitem total, 9, 44--50
-    \subitem underdefined, 165
+    \subitem underdefined, 163
 
   \indexspace
 
@@ -236,7 +239,6 @@
   \indexspace
 
   \item \isa {hd} (constant), 15, 35
-  \item higher-order pattern, \bold{159}
   \item Hilbert's $\varepsilon$-operator, 70
   \item HOLCF, 41
   \item Hopcroft, J. E., 129
@@ -265,8 +267,11 @@
   \item \isa {impI} (theorem), \bold{56}
   \item implication, 56--57
   \item \isa {ind_cases} (method), 115
-  \item \isa {induct_tac} (method), 10, 17, 50, 172
-  \item induction, 168--175
+  \item \isa {induct_tac} (method), 10, 17, 50, 170
+  \item induction, 166--173
+    \subitem complete, 168
+    \subitem deriving new schemas, 170
+    \subitem on a term, 167
     \subitem recursion, 49--50
     \subitem structural, 17
     \subitem well-founded, 99
@@ -283,21 +288,22 @@
   \item \isa {insert} (constant), 91
   \item \isa {insert} (method), 81--82
   \item instance, \bold{145}
-  \item \texttt {INT}, \bold{189}
-  \item \texttt {Int}, \bold{189}
+  \item \texttt {INT}, \bold{187}
+  \item \texttt {Int}, \bold{187}
   \item \isa {int} (type), 135
   \item \isa {INT_iff} (theorem), \bold{92}
   \item \isa {IntD1} (theorem), \bold{89}
   \item \isa {IntD2} (theorem), \bold{89}
   \item integers, 135
   \item \isa {INTER} (constant), 93
-  \item \texttt {Inter}, \bold{189}
+  \item \texttt {Inter}, \bold{187}
   \item \isa {Inter_iff} (theorem), \bold{92}
   \item intersection, 89
     \subitem indexed, 92
   \item \isa {IntI} (theorem), \bold{89}
   \item \isa {intro} (method), 58
   \item \isa {intro!} (attribute), 112
+  \item \isa {intro_classes} (method), 145
   \item introduction rules, 52--53
   \item \isa {inv} (constant), 70
   \item \isa {inv_image_def} (theorem), \bold{99}
@@ -322,13 +328,13 @@
   \item \isacommand {lemma} (command), 11
   \item \isacommand {lemmas} (command), 77, 86
   \item \isa {length} (symbol), 16
-  \item \isa {length_induct}, \bold{172}
+  \item \isa {length_induct}, \bold{170}
   \item \isa {less_than} (constant), 98
   \item \isa {less_than_iff} (theorem), \bold{98}
   \item \isa {let} expressions, 3, 4, 29
   \item \isa {Let_def} (theorem), 29
   \item \isa {lex_prod_def} (theorem), \bold{99}
-  \item lexicographic product, \bold{99}, 160
+  \item lexicographic product, \bold{99}, 158
   \item {\texttt{lfp}}
     \subitem applications of, \see{CTL}{100}
   \item linear arithmetic, 20--22, 131
@@ -336,7 +342,7 @@
   \item \isa {list} (type), 2, 7, 15
   \item \isa {list.split} (theorem), 30
   \item \isa {lists_mono} (theorem), \bold{121}
-  \item Lowe, Gavin, 178--179
+  \item Lowe, Gavin, 176--177
 
   \indexspace
 
@@ -356,17 +362,19 @@
   \item \isa {mono_def} (theorem), \bold{100}
   \item monotone functions, \bold{100}, 123
     \subitem and inductive definitions, 121--122
-  \item \isa {more} (constant), 140--142
+  \item \isa {more} (constant), 140, 141
   \item \isa {mp} (theorem), \bold{56}
   \item \isa {mult_ac} (theorems), 134
+  \item multiple inheritance, \bold{149}
   \item multiset ordering, \bold{99}
 
   \indexspace
 
   \item \isa {nat} (type), 2, 20, 133--134
+  \item \isa {nat_less_induct} (theorem), 168
   \item natural deduction, 51--52
   \item natural numbers, 20, 133--134
-  \item Needham-Schroeder protocol, 177--179
+  \item Needham-Schroeder protocol, 175--177
   \item negation, 57--59
   \item \isa {Nil} (constant), 7
   \item \isa {no_asm} (modifier), 27
@@ -384,14 +392,14 @@
   \indexspace
 
   \item \isa {O} (symbol), 96
-  \item \texttt {o}, \bold{189}
+  \item \texttt {o}, \bold{187}
   \item \isa {o_def} (theorem), \bold{94}
   \item \isa {OF} (attribute), 79--80
   \item \isa {of} (attribute), 77, 80
   \item \isa {only} (modifier), 27
   \item \isacommand {oops} (command), 11
   \item \isa {option} (type), \bold{22}
-  \item ordered rewriting, \bold{158}
+  \item ordered rewriting, \bold{156}
   \item overloading, 21, 144--146
     \subitem and arithmetic, 132
 
@@ -399,12 +407,11 @@
 
   \item pairs and tuples, 22, 137--140
   \item parent theories, \bold{2}
-  \item partial function, 164
   \item pattern matching
     \subitem and \isacommand{recdef}, 45
-  \item pattern, higher-order, \bold{159}
+  \item patterns
+    \subitem higher-order, \bold{157}
   \item PDL, 102--104
-  \item permutative rewrite rule, \bold{158}
   \item \isacommand {pr} (command), 14, 84
   \item \isacommand {prefer} (command), 14, 84
   \item primitive recursion, \see{recursion, primitive}{1}
@@ -416,7 +423,7 @@
     \subitem abandoning, \bold{11}
     \subitem examples of failing, 71--73
   \item protocols
-    \subitem security, 177--187
+    \subitem security, 175--185
 
   \indexspace
 
@@ -439,18 +446,19 @@
   \item \isa {Real} (theory), 137
   \item \isa {real} (type), 136--137
   \item real numbers, 136--137
-  \item \isacommand {recdef} (command), 44--50, 98, 160--168
+  \item \isacommand {recdef} (command), 44--50, 98, 158--166
     \subitem and numeric literals, 132
-  \item \isa {recdef_cong} (attribute), 164
+  \item \isa {recdef_cong} (attribute), 162
   \item \isa {recdef_simp} (attribute), 46
-  \item \isa {recdef_wf} (attribute), 162
+  \item \isa {recdef_wf} (attribute), 160
   \item \isacommand {record} (command), 140
   \item \isa {record_split} (method), 143
   \item records, 140--144
     \subitem extensible, 141--142
   \item recursion
+    \subitem guarded, 163
     \subitem primitive, 16
-    \subitem well-founded, \bold{161}
+    \subitem well-founded, \bold{159}
   \item recursion induction, 49--50
   \item \isacommand {redo} (command), 14
   \item reflexive and transitive closure, 96--98
@@ -460,16 +468,15 @@
     \subitem well-founded, 98--99
   \item \isa {rename_tac} (method), 66--67
   \item \isa {rev} (constant), 8--12, 32
-  \item rewrite rule
-    \subitem permutative, \bold{158}
   \item rewrite rules, \bold{25}
+    \subitem permutative, \bold{156}
   \item rewriting, \bold{25}
-    \subitem ordered, \bold{158}
   \item \isa {rotate_tac} (method), 28
   \item \isa {rtrancl_refl} (theorem), \bold{96}
   \item \isa {rtrancl_trans} (theorem), \bold{96}
   \item rule induction, 112--114
   \item rule inversion, 114--115, 123--124
+  \item \isa {rule_format} (attribute), 167
   \item \isa {rule_tac} (method), 60
     \subitem and renaming, 67
 
@@ -490,19 +497,18 @@
   \item \isa {simp} (method), \bold{26}
   \item \isa {simp} del (attribute), 26
   \item \isa {simp_all} (method), 26, 35
-  \item simplification, 25--31, 157--160
+  \item simplification, 25--31, 155--158
     \subitem of \isa{let}-expressions, 29
-    \subitem ordered, \bold{158}
     \subitem with definitions, 28
     \subitem with/of assumptions, 27
-  \item simplification rule, 159--160
+  \item simplification rule, 157--158
   \item simplification rules, 26
     \subitem adding and deleting, 27
   \item \isa {simplified} (attribute), 77, 80
   \item \isa {size} (constant), 15
   \item \isa {snd} (constant), 22
   \item \isa {SOME} (symbol), 70
-  \item \texttt {SOME}, \bold{189}
+  \item \texttt {SOME}, \bold{187}
   \item \isa {Some} (constant), \bold{22}
   \item \isa {some_equality} (theorem), \bold{70}
   \item \isa {someI} (theorem), \bold{70}
@@ -519,6 +525,7 @@
   \item \isa {split_if_asm} (theorem), 30
   \item \isa {ssubst} (theorem), \bold{61}
   \item structural induction, \see{induction, structural}{1}
+  \item subclasses, 144, 148
   \item subgoal numbering, 44
   \item \isa {subgoal_tac} (method), 82
   \item subgoals, 10
@@ -568,17 +575,17 @@
   \item type synonyms, 23
   \item type variables, 3
   \item \isacommand {typedecl} (command), 101, 150
-  \item \isacommand {typedef} (command), 151--155
+  \item \isacommand {typedef} (command), 151--154
   \item types, 2--3
     \subitem declaring, 150--151
-    \subitem defining, 151--155
+    \subitem defining, 151--154
   \item \isacommand {types} (command), 23
 
   \indexspace
 
   \item Ullman, J. D., 129
-  \item \texttt {UN}, \bold{189}
-  \item \texttt {Un}, \bold{189}
+  \item \texttt {UN}, \bold{187}
+  \item \texttt {Un}, \bold{187}
   \item \isa {UN_E} (theorem), \bold{92}
   \item \isa {UN_I} (theorem), \bold{92}
   \item \isa {UN_iff} (theorem), \bold{92}
@@ -586,7 +593,7 @@
   \item \isacommand {undo} (command), 14
   \item unification, 60--63
   \item \isa {UNION} (constant), 93
-  \item \texttt {Union}, \bold{189}
+  \item \texttt {Union}, \bold{187}
   \item union
     \subitem indexed, 92
   \item \isa {Union_iff} (theorem), \bold{92}
@@ -604,14 +611,16 @@
 
   \indexspace
 
-  \item Wenzel, Markus, v
+  \item Wenzel, Markus, vii
   \item \isa {wf_induct} (theorem), \bold{99}
   \item \isa {wf_inv_image} (theorem), \bold{99}
   \item \isa {wf_less_than} (theorem), \bold{98}
   \item \isa {wf_lex_prod} (theorem), \bold{99}
   \item \isa {wf_measure} (theorem), \bold{99}
-  \item \isa {while} (constant), 167
-  \item \isa {While_Combinator} (theory), 167
+  \item \isa {wf_subset} (theorem), 160
+  \item \isa {while} (constant), 165
+  \item \isa {While_Combinator} (theory), 165
+  \item \isa {while_rule} (theorem), 165
 
   \indexspace