doc-src/IsarRef/Thy/document/Misc.tex
changeset 40406 313a24b66a8d
parent 40255 9ffbc25e1606
child 41624 237328506a42
--- a/doc-src/IsarRef/Thy/document/Misc.tex	Sun Nov 07 23:32:26 2010 +0100
+++ b/doc-src/IsarRef/Thy/document/Misc.tex	Mon Nov 08 00:00:47 2010 +0100
@@ -28,16 +28,16 @@
 %
 \begin{isamarkuptext}%
 \begin{matharray}{rcl}
-    \indexdef{}{command}{print\_commands}\hypertarget{command.print-commands}{\hyperlink{command.print-commands}{\mbox{\isa{\isacommand{print{\isacharunderscore}commands}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{print\_theory}\hypertarget{command.print-theory}{\hyperlink{command.print-theory}{\mbox{\isa{\isacommand{print{\isacharunderscore}theory}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{print\_methods}\hypertarget{command.print-methods}{\hyperlink{command.print-methods}{\mbox{\isa{\isacommand{print{\isacharunderscore}methods}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{print\_attributes}\hypertarget{command.print-attributes}{\hyperlink{command.print-attributes}{\mbox{\isa{\isacommand{print{\isacharunderscore}attributes}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{print\_theorems}\hypertarget{command.print-theorems}{\hyperlink{command.print-theorems}{\mbox{\isa{\isacommand{print{\isacharunderscore}theorems}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{find\_theorems}\hypertarget{command.find-theorems}{\hyperlink{command.find-theorems}{\mbox{\isa{\isacommand{find{\isacharunderscore}theorems}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{find\_consts}\hypertarget{command.find-consts}{\hyperlink{command.find-consts}{\mbox{\isa{\isacommand{find{\isacharunderscore}consts}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{thm\_deps}\hypertarget{command.thm-deps}{\hyperlink{command.thm-deps}{\mbox{\isa{\isacommand{thm{\isacharunderscore}deps}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{print\_facts}\hypertarget{command.print-facts}{\hyperlink{command.print-facts}{\mbox{\isa{\isacommand{print{\isacharunderscore}facts}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{print\_binds}\hypertarget{command.print-binds}{\hyperlink{command.print-binds}{\mbox{\isa{\isacommand{print{\isacharunderscore}binds}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}context\ {\isasymrightarrow}{\isachardoublequote}} \\
+    \indexdef{}{command}{print\_commands}\hypertarget{command.print-commands}{\hyperlink{command.print-commands}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}commands}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{print\_theory}\hypertarget{command.print-theory}{\hyperlink{command.print-theory}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}theory}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{print\_methods}\hypertarget{command.print-methods}{\hyperlink{command.print-methods}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}methods}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{print\_attributes}\hypertarget{command.print-attributes}{\hyperlink{command.print-attributes}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}attributes}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{print\_theorems}\hypertarget{command.print-theorems}{\hyperlink{command.print-theorems}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}theorems}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{find\_theorems}\hypertarget{command.find-theorems}{\hyperlink{command.find-theorems}{\mbox{\isa{\isacommand{find{\isaliteral{5F}{\isacharunderscore}}theorems}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{find\_consts}\hypertarget{command.find-consts}{\hyperlink{command.find-consts}{\mbox{\isa{\isacommand{find{\isaliteral{5F}{\isacharunderscore}}consts}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{thm\_deps}\hypertarget{command.thm-deps}{\hyperlink{command.thm-deps}{\mbox{\isa{\isacommand{thm{\isaliteral{5F}{\isacharunderscore}}deps}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{print\_facts}\hypertarget{command.print-facts}{\hyperlink{command.print-facts}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}facts}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{print\_binds}\hypertarget{command.print-binds}{\hyperlink{command.print-binds}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}binds}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}context\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
   \end{matharray}
 
   \begin{rail}
@@ -63,59 +63,59 @@
 
   \begin{description}
   
-  \item \hyperlink{command.print-commands}{\mbox{\isa{\isacommand{print{\isacharunderscore}commands}}}} prints Isabelle's outer theory
+  \item \hyperlink{command.print-commands}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}commands}}}} prints Isabelle's outer theory
   syntax, including keywords and command.
   
-  \item \hyperlink{command.print-theory}{\mbox{\isa{\isacommand{print{\isacharunderscore}theory}}}} prints the main logical content of
-  the theory context; the ``\isa{{\isachardoublequote}{\isacharbang}{\isachardoublequote}}'' option indicates extra
+  \item \hyperlink{command.print-theory}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}theory}}}} prints the main logical content of
+  the theory context; the ``\isa{{\isaliteral{22}{\isachardoublequote}}{\isaliteral{21}{\isacharbang}}{\isaliteral{22}{\isachardoublequote}}}'' option indicates extra
   verbosity.
 
-  \item \hyperlink{command.print-methods}{\mbox{\isa{\isacommand{print{\isacharunderscore}methods}}}} prints all proof methods
+  \item \hyperlink{command.print-methods}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}methods}}}} prints all proof methods
   available in the current theory context.
   
-  \item \hyperlink{command.print-attributes}{\mbox{\isa{\isacommand{print{\isacharunderscore}attributes}}}} prints all attributes
+  \item \hyperlink{command.print-attributes}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}attributes}}}} prints all attributes
   available in the current theory context.
   
-  \item \hyperlink{command.print-theorems}{\mbox{\isa{\isacommand{print{\isacharunderscore}theorems}}}} prints theorems resulting from the
-  last command; the ``\isa{{\isachardoublequote}{\isacharbang}{\isachardoublequote}}'' option indicates extra verbosity.
+  \item \hyperlink{command.print-theorems}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}theorems}}}} prints theorems resulting from the
+  last command; the ``\isa{{\isaliteral{22}{\isachardoublequote}}{\isaliteral{21}{\isacharbang}}{\isaliteral{22}{\isachardoublequote}}}'' option indicates extra verbosity.
   
-  \item \hyperlink{command.find-theorems}{\mbox{\isa{\isacommand{find{\isacharunderscore}theorems}}}}~\isa{criteria} retrieves facts
+  \item \hyperlink{command.find-theorems}{\mbox{\isa{\isacommand{find{\isaliteral{5F}{\isacharunderscore}}theorems}}}}~\isa{criteria} retrieves facts
   from the theory or proof context matching all of given search
-  criteria.  The criterion \isa{{\isachardoublequote}name{\isacharcolon}\ p{\isachardoublequote}} selects all theorems
+  criteria.  The criterion \isa{{\isaliteral{22}{\isachardoublequote}}name{\isaliteral{3A}{\isacharcolon}}\ p{\isaliteral{22}{\isachardoublequote}}} selects all theorems
   whose fully qualified name matches pattern \isa{p}, which may
-  contain ``\isa{{\isachardoublequote}{\isacharasterisk}{\isachardoublequote}}'' wildcards.  The criteria \isa{intro},
+  contain ``\isa{{\isaliteral{22}{\isachardoublequote}}{\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}}'' wildcards.  The criteria \isa{intro},
   \isa{elim}, and \isa{dest} select theorems that match the
   current goal as introduction, elimination or destruction rules,
-  respectively.  The criterion \isa{{\isachardoublequote}solves{\isachardoublequote}} returns all rules
+  respectively.  The criterion \isa{{\isaliteral{22}{\isachardoublequote}}solves{\isaliteral{22}{\isachardoublequote}}} returns all rules
   that would directly solve the current goal.  The criterion
-  \isa{{\isachardoublequote}simp{\isacharcolon}\ t{\isachardoublequote}} selects all rewrite rules whose left-hand side
+  \isa{{\isaliteral{22}{\isachardoublequote}}simp{\isaliteral{3A}{\isacharcolon}}\ t{\isaliteral{22}{\isachardoublequote}}} selects all rewrite rules whose left-hand side
   matches the given term.  The criterion term \isa{t} selects all
   theorems that contain the pattern \isa{t} -- as usual, patterns
-  may contain occurrences of the dummy ``\isa{{\isacharunderscore}}'', schematic
+  may contain occurrences of the dummy ``\isa{{\isaliteral{5F}{\isacharunderscore}}}'', schematic
   variables, and type constraints.
   
-  Criteria can be preceded by ``\isa{{\isachardoublequote}{\isacharminus}{\isachardoublequote}}'' to select theorems that
+  Criteria can be preceded by ``\isa{{\isaliteral{22}{\isachardoublequote}}{\isaliteral{2D}{\isacharminus}}{\isaliteral{22}{\isachardoublequote}}}'' to select theorems that
   do \emph{not} match. Note that giving the empty list of criteria
   yields \emph{all} currently known facts.  An optional limit for the
   number of printed facts may be given; the default is 40.  By
   default, duplicates are removed from the search result. Use
-  \isa{with{\isacharunderscore}dups} to display duplicates.
+  \isa{with{\isaliteral{5F}{\isacharunderscore}}dups} to display duplicates.
 
-  \item \hyperlink{command.find-consts}{\mbox{\isa{\isacommand{find{\isacharunderscore}consts}}}}~\isa{criteria} prints all constants
-  whose type meets all of the given criteria. The criterion \isa{{\isachardoublequote}strict{\isacharcolon}\ ty{\isachardoublequote}} is met by any type that matches the type pattern
-  \isa{ty}.  Patterns may contain both the dummy type ``\isa{{\isacharunderscore}}''
+  \item \hyperlink{command.find-consts}{\mbox{\isa{\isacommand{find{\isaliteral{5F}{\isacharunderscore}}consts}}}}~\isa{criteria} prints all constants
+  whose type meets all of the given criteria. The criterion \isa{{\isaliteral{22}{\isachardoublequote}}strict{\isaliteral{3A}{\isacharcolon}}\ ty{\isaliteral{22}{\isachardoublequote}}} is met by any type that matches the type pattern
+  \isa{ty}.  Patterns may contain both the dummy type ``\isa{{\isaliteral{5F}{\isacharunderscore}}}''
   and sort constraints. The criterion \isa{ty} is similar, but it
-  also matches against subtypes. The criterion \isa{{\isachardoublequote}name{\isacharcolon}\ p{\isachardoublequote}} and
-  the prefix ``\isa{{\isachardoublequote}{\isacharminus}{\isachardoublequote}}'' function as described for \hyperlink{command.find-theorems}{\mbox{\isa{\isacommand{find{\isacharunderscore}theorems}}}}.
+  also matches against subtypes. The criterion \isa{{\isaliteral{22}{\isachardoublequote}}name{\isaliteral{3A}{\isacharcolon}}\ p{\isaliteral{22}{\isachardoublequote}}} and
+  the prefix ``\isa{{\isaliteral{22}{\isachardoublequote}}{\isaliteral{2D}{\isacharminus}}{\isaliteral{22}{\isachardoublequote}}}'' function as described for \hyperlink{command.find-theorems}{\mbox{\isa{\isacommand{find{\isaliteral{5F}{\isacharunderscore}}theorems}}}}.
 
-  \item \hyperlink{command.thm-deps}{\mbox{\isa{\isacommand{thm{\isacharunderscore}deps}}}}~\isa{{\isachardoublequote}a\isactrlsub {\isadigit{1}}\ {\isasymdots}\ a\isactrlsub n{\isachardoublequote}}
+  \item \hyperlink{command.thm-deps}{\mbox{\isa{\isacommand{thm{\isaliteral{5F}{\isacharunderscore}}deps}}}}~\isa{{\isaliteral{22}{\isachardoublequote}}a\isaliteral{5C3C5E7375623E}{}\isactrlsub {\isadigit{1}}\ {\isaliteral{5C3C646F74733E}{\isasymdots}}\ a\isaliteral{5C3C5E7375623E}{}\isactrlsub n{\isaliteral{22}{\isachardoublequote}}}
   visualizes dependencies of facts, using Isabelle's graph browser
   tool (see also \cite{isabelle-sys}).
   
-  \item \hyperlink{command.print-facts}{\mbox{\isa{\isacommand{print{\isacharunderscore}facts}}}} prints all local facts of the
+  \item \hyperlink{command.print-facts}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}facts}}}} prints all local facts of the
   current context, both named and unnamed ones.
   
-  \item \hyperlink{command.print-binds}{\mbox{\isa{\isacommand{print{\isacharunderscore}binds}}}} prints all term abbreviations
+  \item \hyperlink{command.print-binds}{\mbox{\isa{\isacommand{print{\isaliteral{5F}{\isacharunderscore}}binds}}}} prints all term abbreviations
   present in the context.
 
   \end{description}%
@@ -128,9 +128,9 @@
 %
 \begin{isamarkuptext}%
 \begin{matharray}{rcl}
-    \indexdef{}{command}{undo}\hypertarget{command.undo}{\hyperlink{command.undo}{\mbox{\isa{\isacommand{undo}}}}}^{{ * }{ * }} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}\ any{\isachardoublequote}} \\
-    \indexdef{}{command}{linear\_undo}\hypertarget{command.linear-undo}{\hyperlink{command.linear-undo}{\mbox{\isa{\isacommand{linear{\isacharunderscore}undo}}}}}^{{ * }{ * }} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}\ any{\isachardoublequote}} \\
-    \indexdef{}{command}{kill}\hypertarget{command.kill}{\hyperlink{command.kill}{\mbox{\isa{\isacommand{kill}}}}}^{{ * }{ * }} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}\ any{\isachardoublequote}} \\
+    \indexdef{}{command}{undo}\hypertarget{command.undo}{\hyperlink{command.undo}{\mbox{\isa{\isacommand{undo}}}}}^{{ * }{ * }} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}\ any{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{linear\_undo}\hypertarget{command.linear-undo}{\hyperlink{command.linear-undo}{\mbox{\isa{\isacommand{linear{\isaliteral{5F}{\isacharunderscore}}undo}}}}}^{{ * }{ * }} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}\ any{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{kill}\hypertarget{command.kill}{\hyperlink{command.kill}{\mbox{\isa{\isacommand{kill}}}}}^{{ * }{ * }} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}\ any{\isaliteral{22}{\isachardoublequote}}} \\
   \end{matharray}
 
   The Isabelle/Isar top-level maintains a two-stage history, for
@@ -138,7 +138,7 @@
   be undone using \hyperlink{command.undo}{\mbox{\isa{\isacommand{undo}}}}, excluding mere diagnostic
   elements.  Note that a theorem statement with a \emph{finished}
   proof is treated as a single unit by \hyperlink{command.undo}{\mbox{\isa{\isacommand{undo}}}}.  In
-  contrast, the variant \hyperlink{command.linear-undo}{\mbox{\isa{\isacommand{linear{\isacharunderscore}undo}}}} admits to step back
+  contrast, the variant \hyperlink{command.linear-undo}{\mbox{\isa{\isacommand{linear{\isaliteral{5F}{\isacharunderscore}}undo}}}} admits to step back
   into the middle of a proof.  The \hyperlink{command.kill}{\mbox{\isa{\isacommand{kill}}}} command aborts
   the current history node altogether, discontinuing a proof or even
   the whole theory.  This operation is \emph{not} undo-able.
@@ -147,7 +147,7 @@
     History commands should never be used with user interfaces such as
     Proof~General \cite{proofgeneral,Aspinall:TACAS:2000}, which takes
     care of stepping forth and back itself.  Interfering by manual
-    \hyperlink{command.undo}{\mbox{\isa{\isacommand{undo}}}}, \hyperlink{command.linear-undo}{\mbox{\isa{\isacommand{linear{\isacharunderscore}undo}}}}, or even \hyperlink{command.kill}{\mbox{\isa{\isacommand{kill}}}} commands would quickly result in utter confusion.
+    \hyperlink{command.undo}{\mbox{\isa{\isacommand{undo}}}}, \hyperlink{command.linear-undo}{\mbox{\isa{\isacommand{linear{\isaliteral{5F}{\isacharunderscore}}undo}}}}, or even \hyperlink{command.kill}{\mbox{\isa{\isacommand{kill}}}} commands would quickly result in utter confusion.
   \end{warn}%
 \end{isamarkuptext}%
 \isamarkuptrue%
@@ -158,9 +158,9 @@
 %
 \begin{isamarkuptext}%
 \begin{matharray}{rcl}
-    \indexdef{}{command}{cd}\hypertarget{command.cd}{\hyperlink{command.cd}{\mbox{\isa{\isacommand{cd}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{pwd}\hypertarget{command.pwd}{\hyperlink{command.pwd}{\mbox{\isa{\isacommand{pwd}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}{\isachardoublequote}} \\
-    \indexdef{}{command}{use\_thy}\hypertarget{command.use-thy}{\hyperlink{command.use-thy}{\mbox{\isa{\isacommand{use{\isacharunderscore}thy}}}}}\isa{{\isachardoublequote}\isactrlsup {\isacharasterisk}{\isachardoublequote}} & : & \isa{{\isachardoublequote}any\ {\isasymrightarrow}{\isachardoublequote}} \\
+    \indexdef{}{command}{cd}\hypertarget{command.cd}{\hyperlink{command.cd}{\mbox{\isa{\isacommand{cd}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{pwd}\hypertarget{command.pwd}{\hyperlink{command.pwd}{\mbox{\isa{\isacommand{pwd}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
+    \indexdef{}{command}{use\_thy}\hypertarget{command.use-thy}{\hyperlink{command.use-thy}{\mbox{\isa{\isacommand{use{\isaliteral{5F}{\isacharunderscore}}thy}}}}}\isa{{\isaliteral{22}{\isachardoublequote}}\isaliteral{5C3C5E7375703E}{}\isactrlsup {\isaliteral{2A}{\isacharasterisk}}{\isaliteral{22}{\isachardoublequote}}} & : & \isa{{\isaliteral{22}{\isachardoublequote}}any\ {\isaliteral{5C3C72696768746172726F773E}{\isasymrightarrow}}{\isaliteral{22}{\isachardoublequote}}} \\
   \end{matharray}
 
   \begin{rail}
@@ -175,7 +175,7 @@
 
   \item \hyperlink{command.pwd}{\mbox{\isa{\isacommand{pwd}}}} prints the current working directory.
 
-  \item \hyperlink{command.use-thy}{\mbox{\isa{\isacommand{use{\isacharunderscore}thy}}}}~\isa{A} preload theory \isa{A}.
+  \item \hyperlink{command.use-thy}{\mbox{\isa{\isacommand{use{\isaliteral{5F}{\isacharunderscore}}thy}}}}~\isa{A} preload theory \isa{A}.
   These system commands are scarcely used when working interactively,
   since loading of theories is done automatically as required.