src/Doc/Isar_Ref/Outer_Syntax.thy

 
 section \<open>Commands\<close>
 
 text \<open>
   \begin{matharray}{rcl}
-    @{command_def "print_commands"}@{text "\<^sup>*"} & : & @{text "any \<rightarrow>"} \\
-    @{command_def "help"}@{text "\<^sup>*"} & : & @{text "any \<rightarrow>"} \\
+    @{command_def "print_commands"}\<open>\<^sup>*\<close> & : & \<open>any \<rightarrow>\<close> \\
+    @{command_def "help"}\<open>\<^sup>*\<close> & : & \<open>any \<rightarrow>\<close> \\
   \end{matharray}
 
   @{rail \<open>
     @@{command help} (@{syntax name} * )
   \<close>}
 
   \<^descr> @{command "print_commands"} prints all outer syntax keywords
   and commands.
 
-  \<^descr> @{command "help"}~@{text "pats"} retrieves outer syntax
+  \<^descr> @{command "help"}~\<open>pats\<close> retrieves outer syntax
   commands according to the specified name patterns.
 \<close>
 
 
 subsubsection \<open>Examples\<close>

   \<^medskip>
   The categories for named tokens are defined once and for all as follows.
 
   \begin{center}
   \begin{supertabular}{rcl}
-    @{syntax_def ident} & = & @{text "letter (subscript\<^sup>? quasiletter)\<^sup>*"} \\
-    @{syntax_def longident} & = & @{text "ident("}@{verbatim "."}@{text "ident)\<^sup>+"} \\
-    @{syntax_def symident} & = & @{text "sym\<^sup>+  |  "}@{verbatim \<open>\\<close>}@{verbatim "<"}@{text ident}@{verbatim ">"} \\
-    @{syntax_def nat} & = & @{text "digit\<^sup>+"} \\
-    @{syntax_def float} & = & @{syntax_ref nat}@{verbatim "."}@{syntax_ref nat}@{text "  |  "}@{verbatim "-"}@{syntax_ref nat}@{verbatim "."}@{syntax_ref nat} \\
-    @{syntax_def var} & = & @{verbatim "?"}@{text "ident  |  "}@{verbatim "?"}@{text ident}@{verbatim "."}@{text nat} \\
-    @{syntax_def typefree} & = & @{verbatim "'"}@{text ident} \\
-    @{syntax_def typevar} & = & @{verbatim "?"}@{text "typefree  |  "}@{verbatim "?"}@{text typefree}@{verbatim "."}@{text nat} \\
-    @{syntax_def string} & = & @{verbatim \<open>"\<close>} @{text "\<dots>"} @{verbatim \<open>"\<close>} \\
-    @{syntax_def altstring} & = & @{verbatim "`"} @{text "\<dots>"} @{verbatim "`"} \\
-    @{syntax_def cartouche} & = & @{verbatim "\<open>"} @{text "\<dots>"} @{verbatim "\<close>"} \\
-    @{syntax_def verbatim} & = & @{verbatim "{*"} @{text "\<dots>"} @{verbatim "*}"} \\[1ex]
-
-    @{text letter} & = & @{text "latin  |  "}@{verbatim \<open>\\<close>}@{verbatim "<"}@{text latin}@{verbatim ">"}@{text "  |  "}@{verbatim \<open>\\<close>}@{verbatim "<"}@{text "latin latin"}@{verbatim ">"}@{text "  |  greek  |"} \\
-    @{text subscript} & = & @{verbatim "\<^sub>"} \\
-    @{text quasiletter} & = & @{text "letter  |  digit  |  "}@{verbatim "_"}@{text "  |  "}@{verbatim "'"} \\
-    @{text latin} & = & @{verbatim a}@{text "  | \<dots> |  "}@{verbatim z}@{text "  |  "}@{verbatim A}@{text "  |  \<dots> |  "}@{verbatim Z} \\
-    @{text digit} & = & @{verbatim "0"}@{text "  |  \<dots> |  "}@{verbatim "9"} \\
-    @{text sym} & = & @{verbatim "!"}@{text "  |  "}@{verbatim "#"}@{text "  |  "}@{verbatim "$"}@{text "  |  "}@{verbatim "%"}@{text "  |  "}@{verbatim "&"}@{text "  |  "}@{verbatim "*"}@{text "  |  "}@{verbatim "+"}@{text "  |  "}@{verbatim "-"}@{text "  |  "}@{verbatim "/"}@{text "  |"} \\
-    & & @{verbatim "<"}@{text "  |  "}@{verbatim "="}@{text "  |  "}@{verbatim ">"}@{text "  |  "}@{verbatim "?"}@{text "  |  "}@{verbatim "@"}@{text "  |  "}@{verbatim "^"}@{text "  |  "}@{verbatim "_"}@{text "  |  "}@{verbatim "|"}@{text "  |  "}@{verbatim "~"} \\
-    @{text greek} & = & @{verbatim "\<alpha>"}@{text "  |  "}@{verbatim "\<beta>"}@{text "  |  "}@{verbatim "\<gamma>"}@{text "  |  "}@{verbatim "\<delta>"}@{text "  |"} \\
-          &   & @{verbatim "\<epsilon>"}@{text "  |  "}@{verbatim "\<zeta>"}@{text "  |  "}@{verbatim "\<eta>"}@{text "  |  "}@{verbatim "\<theta>"}@{text "  |"} \\
-          &   & @{verbatim "\<iota>"}@{text "  |  "}@{verbatim "\<kappa>"}@{text "  |  "}@{verbatim "\<mu>"}@{text "  |  "}@{verbatim "\<nu>"}@{text "  |"} \\
-          &   & @{verbatim "\<xi>"}@{text "  |  "}@{verbatim "\<pi>"}@{text "  |  "}@{verbatim "\<rho>"}@{text "  |  "}@{verbatim "\<sigma>"}@{text "  |  "}@{verbatim "\<tau>"}@{text "  |"} \\
-          &   & @{verbatim "\<upsilon>"}@{text "  |  "}@{verbatim "\<phi>"}@{text "  |  "}@{verbatim "\<chi>"}@{text "  |  "}@{verbatim "\<psi>"}@{text "  |"} \\
-          &   & @{verbatim "\<omega>"}@{text "  |  "}@{verbatim "\<Gamma>"}@{text "  |  "}@{verbatim "\<Delta>"}@{text "  |  "}@{verbatim "\<Theta>"}@{text "  |"} \\
-          &   & @{verbatim "\<Lambda>"}@{text "  |  "}@{verbatim "\<Xi>"}@{text "  |  "}@{verbatim "\<Pi>"}@{text "  |  "}@{verbatim "\<Sigma>"}@{text "  |"} \\
-          &   & @{verbatim "\<Upsilon>"}@{text "  |  "}@{verbatim "\<Phi>"}@{text "  |  "}@{verbatim "\<Psi>"}@{text "  |  "}@{verbatim "\<Omega>"} \\
+    @{syntax_def ident} & = & \<open>letter (subscript\<^sup>? quasiletter)\<^sup>*\<close> \\
+    @{syntax_def longident} & = & \<open>ident(\<close>@{verbatim "."}\<open>ident)\<^sup>+\<close> \\
+    @{syntax_def symident} & = & \<open>sym\<^sup>+  |  \<close>@{verbatim \<open>\\<close>}@{verbatim "<"}\<open>ident\<close>@{verbatim ">"} \\
+    @{syntax_def nat} & = & \<open>digit\<^sup>+\<close> \\
+    @{syntax_def float} & = & @{syntax_ref nat}@{verbatim "."}@{syntax_ref nat}\<open>  |  \<close>@{verbatim "-"}@{syntax_ref nat}@{verbatim "."}@{syntax_ref nat} \\
+    @{syntax_def var} & = & @{verbatim "?"}\<open>ident  |  \<close>@{verbatim "?"}\<open>ident\<close>@{verbatim "."}\<open>nat\<close> \\
+    @{syntax_def typefree} & = & @{verbatim "'"}\<open>ident\<close> \\
+    @{syntax_def typevar} & = & @{verbatim "?"}\<open>typefree  |  \<close>@{verbatim "?"}\<open>typefree\<close>@{verbatim "."}\<open>nat\<close> \\
+    @{syntax_def string} & = & @{verbatim \<open>"\<close>} \<open>\<dots>\<close> @{verbatim \<open>"\<close>} \\
+    @{syntax_def altstring} & = & @{verbatim "`"} \<open>\<dots>\<close> @{verbatim "`"} \\
+    @{syntax_def cartouche} & = & @{verbatim "\<open>"} \<open>\<dots>\<close> @{verbatim "\<close>"} \\
+    @{syntax_def verbatim} & = & @{verbatim "{*"} \<open>\<dots>\<close> @{verbatim "*}"} \\[1ex]
+
+    \<open>letter\<close> & = & \<open>latin  |  \<close>@{verbatim \<open>\\<close>}@{verbatim "<"}\<open>latin\<close>@{verbatim ">"}\<open>  |  \<close>@{verbatim \<open>\\<close>}@{verbatim "<"}\<open>latin latin\<close>@{verbatim ">"}\<open>  |  greek  |\<close> \\
+    \<open>subscript\<close> & = & @{verbatim "\<^sub>"} \\
+    \<open>quasiletter\<close> & = & \<open>letter  |  digit  |  \<close>@{verbatim "_"}\<open>  |  \<close>@{verbatim "'"} \\
+    \<open>latin\<close> & = & @{verbatim a}\<open>  | \<dots> |  \<close>@{verbatim z}\<open>  |  \<close>@{verbatim A}\<open>  |  \<dots> |  \<close>@{verbatim Z} \\
+    \<open>digit\<close> & = & @{verbatim "0"}\<open>  |  \<dots> |  \<close>@{verbatim "9"} \\
+    \<open>sym\<close> & = & @{verbatim "!"}\<open>  |  \<close>@{verbatim "#"}\<open>  |  \<close>@{verbatim "$"}\<open>  |  \<close>@{verbatim "%"}\<open>  |  \<close>@{verbatim "&"}\<open>  |  \<close>@{verbatim "*"}\<open>  |  \<close>@{verbatim "+"}\<open>  |  \<close>@{verbatim "-"}\<open>  |  \<close>@{verbatim "/"}\<open>  |\<close> \\
+    & & @{verbatim "<"}\<open>  |  \<close>@{verbatim "="}\<open>  |  \<close>@{verbatim ">"}\<open>  |  \<close>@{verbatim "?"}\<open>  |  \<close>@{verbatim "@"}\<open>  |  \<close>@{verbatim "^"}\<open>  |  \<close>@{verbatim "_"}\<open>  |  \<close>@{verbatim "|"}\<open>  |  \<close>@{verbatim "~"} \\
+    \<open>greek\<close> & = & @{verbatim "\<alpha>"}\<open>  |  \<close>@{verbatim "\<beta>"}\<open>  |  \<close>@{verbatim "\<gamma>"}\<open>  |  \<close>@{verbatim "\<delta>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<epsilon>"}\<open>  |  \<close>@{verbatim "\<zeta>"}\<open>  |  \<close>@{verbatim "\<eta>"}\<open>  |  \<close>@{verbatim "\<theta>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<iota>"}\<open>  |  \<close>@{verbatim "\<kappa>"}\<open>  |  \<close>@{verbatim "\<mu>"}\<open>  |  \<close>@{verbatim "\<nu>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<xi>"}\<open>  |  \<close>@{verbatim "\<pi>"}\<open>  |  \<close>@{verbatim "\<rho>"}\<open>  |  \<close>@{verbatim "\<sigma>"}\<open>  |  \<close>@{verbatim "\<tau>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<upsilon>"}\<open>  |  \<close>@{verbatim "\<phi>"}\<open>  |  \<close>@{verbatim "\<chi>"}\<open>  |  \<close>@{verbatim "\<psi>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<omega>"}\<open>  |  \<close>@{verbatim "\<Gamma>"}\<open>  |  \<close>@{verbatim "\<Delta>"}\<open>  |  \<close>@{verbatim "\<Theta>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<Lambda>"}\<open>  |  \<close>@{verbatim "\<Xi>"}\<open>  |  \<close>@{verbatim "\<Pi>"}\<open>  |  \<close>@{verbatim "\<Sigma>"}\<open>  |\<close> \\
+          &   & @{verbatim "\<Upsilon>"}\<open>  |  \<close>@{verbatim "\<Phi>"}\<open>  |  \<close>@{verbatim "\<Psi>"}\<open>  |  \<close>@{verbatim "\<Omega>"} \\
   \end{supertabular}
   \end{center}
 
   A @{syntax_ref var} or @{syntax_ref typevar} describes an unknown,
   which is internally a pair of base name and index (ML type @{ML_type
   indexname}).  These components are either separated by a dot as in
-  @{text "?x.1"} or @{text "?x7.3"} or run together as in @{text
-  "?x1"}.  The latter form is possible if the base name does not end
+  \<open>?x.1\<close> or \<open>?x7.3\<close> or run together as in \<open>?x1\<close>.  The latter form is possible if the base name does not end
   with digits.  If the index is 0, it may be dropped altogether:
-  @{text "?x"} and @{text "?x0"} and @{text "?x.0"} all refer to the
-  same unknown, with basename @{text "x"} and index 0.
+  \<open>?x\<close> and \<open>?x0\<close> and \<open>?x.0\<close> all refer to the
+  same unknown, with basename \<open>x\<close> and index 0.
 
   The syntax of @{syntax_ref string} admits any characters, including
   newlines; ``@{verbatim \<open>"\<close>}'' (double-quote) and ``@{verbatim \<open>\\<close>}''
   (backslash) need to be escaped by a backslash; arbitrary
-  character codes may be specified as ``@{verbatim \<open>\\<close>}@{text ddd}'',
+  character codes may be specified as ``@{verbatim \<open>\\<close>}\<open>ddd\<close>'',
   with three decimal digits.  Alternative strings according to
   @{syntax_ref altstring} are analogous, using single back-quotes
   instead.
 
   The body of @{syntax_ref verbatim} may consist of any text not containing
   ``@{verbatim "*}"}''; this allows to include quotes without further
   escapes, but there is no way to escape ``@{verbatim "*}"}''. Cartouches
   do not have this limitation.
 
   A @{syntax_ref cartouche} consists of arbitrary text, with properly
-  balanced blocks of ``@{verbatim "\<open>"}~@{text "\<dots>"}~@{verbatim
+  balanced blocks of ``@{verbatim "\<open>"}~\<open>\<dots>\<close>~@{verbatim
   "\<close>"}''.  Note that the rendering of cartouche delimiters is
-  usually like this: ``@{text "\<open> \<dots> \<close>"}''.
-
-  Source comments take the form @{verbatim "(*"}~@{text
-  "\<dots>"}~@{verbatim "*)"} and may be nested, although the user-interface
+  usually like this: ``\<open>\<open> \<dots> \<close>\<close>''.
+
+  Source comments take the form @{verbatim "(*"}~\<open>\<dots>\<close>~@{verbatim "*)"} and may be nested, although the user-interface
   might prevent this.  Note that this form indicates source comments
   only, which are stripped after lexical analysis of the input.  The
   Isar syntax also provides proper \<^emph>\<open>document comments\<close> that are
   considered as part of the text (see \secref{sec:comments}).
 
-  Common mathematical symbols such as @{text \<forall>} are represented in
+  Common mathematical symbols such as \<open>\<forall>\<close> are represented in
   Isabelle as @{verbatim \<forall>}.  There are infinitely many Isabelle
   symbols like this, although proper presentation is left to front-end
   tools such as {\LaTeX} or Isabelle/jEdit.  A list of
   predefined Isabelle symbols that work well with these tools is given
   in \appref{app:symbols}.  Note that @{verbatim "\<lambda>"} does not belong
-  to the @{text letter} category, since it is already used differently
+  to the \<open>letter\<close> category, since it is already used differently
   in the Pure term language.\<close>
 
 
 section \<open>Common syntax entities\<close>
 

 
 
 subsection \<open>Comments \label{sec:comments}\<close>
 
 text \<open>Large chunks of plain @{syntax text} are usually given @{syntax
-  verbatim}, i.e.\ enclosed in @{verbatim "{*"}~@{text "\<dots>"}~@{verbatim "*}"},
-  or as @{syntax cartouche} @{text "\<open>\<dots>\<close>"}. For convenience, any of the
+  verbatim}, i.e.\ enclosed in @{verbatim "{*"}~\<open>\<dots>\<close>~@{verbatim "*}"},
+  or as @{syntax cartouche} \<open>\<open>\<dots>\<close>\<close>. For convenience, any of the
   smaller text units conforming to @{syntax nameref} are admitted as well. A
   marginal @{syntax comment} is of the form @{verbatim "--"}~@{syntax text}.
   Any number of these may occur within Isabelle/Isar commands.
 
   @{rail \<open>

 
 subsection \<open>Type classes, sorts and arities\<close>
 
 text \<open>
   Classes are specified by plain names.  Sorts have a very simple
-  inner syntax, which is either a single class name @{text c} or a
-  list @{text "{c\<^sub>1, \<dots>, c\<^sub>n}"} referring to the
+  inner syntax, which is either a single class name \<open>c\<close> or a
+  list \<open>{c\<^sub>1, \<dots>, c\<^sub>n}\<close> referring to the
   intersection of these classes.  The syntax of type arities is given
   directly at the outer level.
 
   @{rail \<open>
     @{syntax_def classdecl}: @{syntax name} (('<' | '\<subseteq>') (@{syntax nameref} + ','))?

   quoted to turn it into a single token (the parsing and type-checking
   is performed internally later).  For convenience, a slightly more
   liberal convention is adopted: quotes may be omitted for any type or
   term that is already atomic at the outer level.  For example, one
   may just write @{verbatim x} instead of quoted @{verbatim \<open>"x"\<close>}.
-  Note that symbolic identifiers (e.g.\ @{verbatim "++"} or @{text
-  "\<forall>"} are available as well, provided these have not been superseded
+  Note that symbolic identifiers (e.g.\ @{verbatim "++"} or \<open>\<forall>\<close> are available as well, provided these have not been superseded
   by commands or other keywords already (such as @{verbatim "="} or
   @{verbatim "+"}).
 
   @{rail \<open>
     @{syntax_def type}: @{syntax nameref} | @{syntax typefree} |

     ;
     @{syntax_def prop}: @{syntax term}
   \<close>}
 
   Positional instantiations are specified as a sequence of terms, or the
-  placeholder ``@{text _}'' (underscore), which means to skip a position.
+  placeholder ``\<open>_\<close>'' (underscore), which means to skip a position.
 
   @{rail \<open>
     @{syntax_def inst}: '_' | @{syntax term}
     ;
     @{syntax_def insts}: (@{syntax inst} *)
   \<close>}
 
-  Named instantiations are specified as pairs of assignments @{text "v =
-  t"}, which refer to schematic variables in some theorem that is
+  Named instantiations are specified as pairs of assignments \<open>v =
+  t\<close>, which refer to schematic variables in some theorem that is
   instantiated. Both type and terms instantiations are admitted, and
   distinguished by the usual syntax of variable names.
 
   @{rail \<open>
     @{syntax_def named_inst}: variable '=' (type | term)

 
 subsection \<open>Term patterns and declarations \label{sec:term-decls}\<close>
 
 text \<open>Wherever explicit propositions (or term fragments) occur in a
   proof text, casual binding of schematic term variables may be given
-  specified via patterns of the form ``@{text "(\<IS> p\<^sub>1 \<dots> p\<^sub>n)"}''.
+  specified via patterns of the form ``\<open>(\<IS> p\<^sub>1 \<dots> p\<^sub>n)\<close>''.
   This works both for @{syntax term} and @{syntax prop}.
 
   @{rail \<open>
     @{syntax_def term_pat}: '(' (@'is' @{syntax term} +) ')'
     ;
     @{syntax_def prop_pat}: '(' (@'is' @{syntax prop} +) ')'
   \<close>}
 
   \<^medskip>
-  Declarations of local variables @{text "x :: \<tau>"} and
-  logical propositions @{text "a : \<phi>"} represent different views on
+  Declarations of local variables \<open>x :: \<tau>\<close> and
+  logical propositions \<open>a : \<phi>\<close> represent different views on
   the same principle of introducing a local scope.  In practice, one
   may usually omit the typing of @{syntax vars} (due to
   type-inference), and the naming of propositions (due to implicit
   references of current facts).  In any case, Isar proof elements
   usually admit to introduce multiple such items simultaneously.

     @{syntax_def props}: @{syntax thmdecl}? (@{syntax prop} @{syntax prop_pat}? +)
   \<close>}
 
   The treatment of multiple declarations corresponds to the
   complementary focus of @{syntax vars} versus @{syntax props}.  In
-  ``@{text "x\<^sub>1 \<dots> x\<^sub>n :: \<tau>"}'' the typing refers to all variables, while
-  in @{text "a: \<phi>\<^sub>1 \<dots> \<phi>\<^sub>n"} the naming refers to all propositions
+  ``\<open>x\<^sub>1 \<dots> x\<^sub>n :: \<tau>\<close>'' the typing refers to all variables, while
+  in \<open>a: \<phi>\<^sub>1 \<dots> \<phi>\<^sub>n\<close> the naming refers to all propositions
   collectively.  Isar language elements that refer to @{syntax vars}
   or @{syntax props} typically admit separate typings or namings via
   another level of iteration, with explicit @{keyword_ref "and"}
   separators; e.g.\ see @{command "fix"} and @{command "assume"} in
   \secref{sec:proof-context}.

     @{syntax_def "for_fixes"}: (@'for' @{syntax "fixes"})?
   \<close>}
 
   The category @{syntax "fixes"} is a richer variant of @{syntax vars}: it
   admits specification of mixfix syntax for the entities that are introduced
-  into the context. An optional suffix ``@{keyword "for"}~@{text "fixes"}''
+  into the context. An optional suffix ``@{keyword "for"}~\<open>fixes\<close>''
   is admitted in many situations to indicate a so-called ``eigen-context''
   of a formal element: the result will be exported and thus generalized over
   the given variables.\<close>
 
 

   and @{syntax thmrefs}, the former requires an actual singleton
   result.
 
   There are three forms of theorem references:
 
-  \<^enum> named facts @{text "a"},
-
-  \<^enum> selections from named facts @{text "a(i)"} or @{text "a(j - k)"},
+  \<^enum> named facts \<open>a\<close>,
+
+  \<^enum> selections from named facts \<open>a(i)\<close> or \<open>a(j - k)\<close>,
 
   \<^enum> literal fact propositions using token syntax @{syntax_ref altstring}
-  @{verbatim "`"}@{text "\<phi>"}@{verbatim "`"} or @{syntax_ref cartouche}
-  @{text "\<open>\<phi>\<close>"} (see also method @{method_ref fact}).
+  @{verbatim "`"}\<open>\<phi>\<close>@{verbatim "`"} or @{syntax_ref cartouche}
+  \<open>\<open>\<phi>\<close>\<close> (see also method @{method_ref fact}).
 
 
   Any kind of theorem specification may include lists of attributes
   both on the left and right hand sides; attributes are applied to any
   immediately preceding fact.  If names are omitted, the theorems are
   not stored within the theorem database of the theory or proof
   context, but any given attributes are applied nonetheless.
 
-  An extra pair of brackets around attributes (like ``@{text
-  "[[simproc a]]"}'') abbreviates a theorem reference involving an
+  An extra pair of brackets around attributes (like ``\<open>[[simproc a]]\<close>'') abbreviates a theorem reference involving an
   internal dummy fact, which will be ignored later on.  So only the
   effect of the attribute on the background context will persist.
   This form of in-place declarations is particularly useful with
   commands like @{command "declare"} and @{command "using"}.
 

 
 section \<open>Diagnostic commands\<close>
 
 text \<open>
   \begin{matharray}{rcl}
-    @{command_def "print_theory"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "print_definitions"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "print_methods"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "print_attributes"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "print_theorems"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "find_theorems"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "find_consts"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "thm_deps"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "unused_thms"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "print_facts"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
-    @{command_def "print_term_bindings"}@{text "\<^sup>*"} & : & @{text "context \<rightarrow>"} \\
+    @{command_def "print_theory"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "print_definitions"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "print_methods"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "print_attributes"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "print_theorems"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "find_theorems"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "find_consts"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "thm_deps"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "unused_thms"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "print_facts"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
+    @{command_def "print_term_bindings"}\<open>\<^sup>*\<close> & : & \<open>context \<rightarrow>\<close> \\
   \end{matharray}
 
   @{rail \<open>
     (@@{command print_theory} |
       @@{command print_definitions} |

   These commands print certain parts of the theory and proof context.
   Note that there are some further ones available, such as for the set
   of rules declared for simplifications.
 
   \<^descr> @{command "print_theory"} prints the main logical content of the
-  background theory; the ``@{text "!"}'' option indicates extra verbosity.
+  background theory; the ``\<open>!\<close>'' option indicates extra verbosity.
 
   \<^descr> @{command "print_definitions"} prints dependencies of definitional
   specifications within the background theory, which may be constants
   \secref{sec:consts} or types (\secref{sec:types-pure},
-  \secref{sec:hol-typedef}); the ``@{text "!"}'' option indicates extra
+  \secref{sec:hol-typedef}); the ``\<open>!\<close>'' option indicates extra
   verbosity.
 
   \<^descr> @{command "print_methods"} prints all proof methods available in the
-  current theory context; the ``@{text "!"}'' option indicates extra
+  current theory context; the ``\<open>!\<close>'' option indicates extra
   verbosity.
 
   \<^descr> @{command "print_attributes"} prints all attributes available in the
-  current theory context; the ``@{text "!"}'' option indicates extra
+  current theory context; the ``\<open>!\<close>'' option indicates extra
   verbosity.
 
   \<^descr> @{command "print_theorems"} prints theorems of the background theory
-  resulting from the last command; the ``@{text "!"}'' option indicates
+  resulting from the last command; the ``\<open>!\<close>'' option indicates
   extra verbosity.
 
   \<^descr> @{command "print_facts"} prints all local facts of the current
-  context, both named and unnamed ones; the ``@{text "!"}'' option indicates
+  context, both named and unnamed ones; the ``\<open>!\<close>'' option indicates
   extra verbosity.
 
   \<^descr> @{command "print_term_bindings"} prints all term bindings that
   are present in the context.
 
-  \<^descr> @{command "find_theorems"}~@{text criteria} retrieves facts
+  \<^descr> @{command "find_theorems"}~\<open>criteria\<close> retrieves facts
   from the theory or proof context matching all of given search
-  criteria.  The criterion @{text "name: p"} selects all theorems
-  whose fully qualified name matches pattern @{text p}, which may
-  contain ``@{text "*"}'' wildcards.  The criteria @{text intro},
-  @{text elim}, and @{text dest} select theorems that match the
+  criteria.  The criterion \<open>name: p\<close> selects all theorems
+  whose fully qualified name matches pattern \<open>p\<close>, which may
+  contain ``\<open>*\<close>'' wildcards.  The criteria \<open>intro\<close>,
+  \<open>elim\<close>, and \<open>dest\<close> select theorems that match the
   current goal as introduction, elimination or destruction rules,
-  respectively.  The criterion @{text "solves"} returns all rules
+  respectively.  The criterion \<open>solves\<close> returns all rules
   that would directly solve the current goal.  The criterion
-  @{text "simp: t"} selects all rewrite rules whose left-hand side
-  matches the given term.  The criterion term @{text t} selects all
-  theorems that contain the pattern @{text t} -- as usual, patterns
-  may contain occurrences of the dummy ``@{text _}'', schematic
+  \<open>simp: t\<close> selects all rewrite rules whose left-hand side
+  matches the given term.  The criterion term \<open>t\<close> selects all
+  theorems that contain the pattern \<open>t\<close> -- as usual, patterns
+  may contain occurrences of the dummy ``\<open>_\<close>'', schematic
   variables, and type constraints.
 
-  Criteria can be preceded by ``@{text "-"}'' to select theorems that
+  Criteria can be preceded by ``\<open>-\<close>'' to select theorems that
   do \<^emph>\<open>not\<close> match. Note that giving the empty list of criteria
   yields \<^emph>\<open>all\<close> 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
-  @{text with_dups} to display duplicates.
-
-  \<^descr> @{command "find_consts"}~@{text criteria} prints all constants
-  whose type meets all of the given criteria. The criterion @{text
-  "strict: ty"} is met by any type that matches the type pattern
-  @{text ty}.  Patterns may contain both the dummy type ``@{text _}''
-  and sort constraints. The criterion @{text ty} is similar, but it
-  also matches against subtypes. The criterion @{text "name: p"} and
-  the prefix ``@{text "-"}'' function as described for @{command
+  \<open>with_dups\<close> to display duplicates.
+
+  \<^descr> @{command "find_consts"}~\<open>criteria\<close> prints all constants
+  whose type meets all of the given criteria. The criterion \<open>strict: ty\<close> is met by any type that matches the type pattern
+  \<open>ty\<close>.  Patterns may contain both the dummy type ``\<open>_\<close>''
+  and sort constraints. The criterion \<open>ty\<close> is similar, but it
+  also matches against subtypes. The criterion \<open>name: p\<close> and
+  the prefix ``\<open>-\<close>'' function as described for @{command
   "find_theorems"}.
 
-  \<^descr> @{command "thm_deps"}~@{text "a\<^sub>1 \<dots> a\<^sub>n"}
+  \<^descr> @{command "thm_deps"}~\<open>a\<^sub>1 \<dots> a\<^sub>n\<close>
   visualizes dependencies of facts, using Isabelle's graph browser
   tool (see also @{cite "isabelle-system"}).
 
-  \<^descr> @{command "unused_thms"}~@{text "A\<^sub>1 \<dots> A\<^sub>m - B\<^sub>1 \<dots> B\<^sub>n"}
-  displays all theorems that are proved in theories @{text "B\<^sub>1 \<dots> B\<^sub>n"}
-  or their parents but not in @{text "A\<^sub>1 \<dots> A\<^sub>m"} or their parents and
+  \<^descr> @{command "unused_thms"}~\<open>A\<^sub>1 \<dots> A\<^sub>m - B\<^sub>1 \<dots> B\<^sub>n\<close>
+  displays all theorems that are proved in theories \<open>B\<^sub>1 \<dots> B\<^sub>n\<close>
+  or their parents but not in \<open>A\<^sub>1 \<dots> A\<^sub>m\<close> or their parents and
   that are never used.
-  If @{text n} is @{text 0}, the end of the range of theories
+  If \<open>n\<close> is \<open>0\<close>, the end of the range of theories
   defaults to the current theory. If no range is specified,
   only the unused theorems in the current theory are displayed.
 \<close>
 
 end