diff -r 3480725c71d2 -r 0debd22f0c0e src/Doc/Isar_Ref/Symbols.thy
--- a/src/Doc/Isar_Ref/Symbols.thy	Tue Oct 20 23:03:46 2015 +0200
+++ b/src/Doc/Isar_Ref/Symbols.thy	Tue Oct 20 23:53:40 2015 +0200
@@ -6,26 +6,24 @@
 
 text \<open>
   Isabelle supports an infinite number of non-ASCII symbols, which are
-  represented in source text as @{verbatim \<open>\\<close>}@{verbatim "<"}@{text
-  name}@{verbatim ">"} (where @{text name} may be any identifier).  It
+  represented in source text as @{verbatim \<open>\\<close>}@{verbatim "<"}\<open>name\<close>@{verbatim ">"} (where \<open>name\<close> may be any identifier).  It
   is left to front-end tools how to present these symbols to the user.
   The collection of predefined standard symbols given below is
   available by default for Isabelle document output, due to
-  appropriate definitions of @{verbatim \<open>\isasym\<close>}@{text
-  name} for each @{verbatim \<open>\\<close>}@{verbatim "<"}@{text name}@{verbatim
+  appropriate definitions of @{verbatim \<open>\isasym\<close>}\<open>name\<close> for each @{verbatim \<open>\\<close>}@{verbatim "<"}\<open>name\<close>@{verbatim
   ">"} in the @{verbatim isabellesym.sty} file.  Most of these symbols
   are displayed properly in Isabelle/jEdit and {\LaTeX} generated from Isabelle.
 
   Moreover, any single symbol (or ASCII character) may be prefixed by
   @{verbatim "\<^sup>"} for superscript and @{verbatim "\<^sub>"} for subscript,
-  such as @{verbatim "A\<^sup>\<star>"} for @{text "A\<^sup>\<star>"} and @{verbatim "A\<^sub>1"} for
-  @{text "A\<^sub>1"}.  Sub- and superscripts that span a region of text can
-  be marked up with @{verbatim "\<^bsub>"}@{text "\<dots>"}@{verbatim
-  "\<^esub>"} and @{verbatim "\<^bsup>"}@{text "\<dots>"}@{verbatim "\<^esup>"}
+  such as @{verbatim "A\<^sup>\<star>"} for \<open>A\<^sup>\<star>\<close> and @{verbatim "A\<^sub>1"} for
+  \<open>A\<^sub>1\<close>.  Sub- and superscripts that span a region of text can
+  be marked up with @{verbatim "\<^bsub>"}\<open>\<dots>\<close>@{verbatim
+  "\<^esub>"} and @{verbatim "\<^bsup>"}\<open>\<dots>\<close>@{verbatim "\<^esup>"}
   respectively, but note that there are limitations in the typographic
   rendering quality of this form.  Furthermore, all ASCII characters
   and most other symbols may be printed in bold by prefixing
-  @{verbatim "\<^bold>"} such as @{verbatim "\<^bold>\<alpha>"} for @{text "\<^bold>\<alpha>"}.  Note that
+  @{verbatim "\<^bold>"} such as @{verbatim "\<^bold>\<alpha>"} for \<open>\<^bold>\<alpha>\<close>.  Note that
   @{verbatim "\<^sup>"}, @{verbatim "\<^sub>"}, @{verbatim "\<^bold>"} cannot be combined.
 
   Further details of Isabelle document preparation are covered in