diff -r 88c2cf6a5692 -r de9e73baa5f8 doc-src/isar.sty
--- a/doc-src/isar.sty	Fri Sep 03 16:10:27 1999 +0200
+++ b/doc-src/isar.sty	Fri Sep 03 16:10:39 1999 +0200
@@ -8,12 +8,12 @@
 
 \newcommand{\isarkeyword}[1]{{\mathord{\mathbf{#1}}}}
 
-\newcommand{\indexoutertoken}[1]{\index{#1 (syntax)|bold}}
-\newcommand{\indexouternonterm}[1]{\index{#1 (syntax)|bold}}
-\newcommand{\indexisarcmd}[1]{\index{#1 (command)|bold}}
-\newcommand{\indexisarmeth}[1]{\index{#1 (method)|bold}}
-\newcommand{\indexisaratt}[1]{\index{#1 (attribute)|bold}}
-\newcommand{\indexisarthm}[1]{\index{#1 (theorem)|bold}}
+\newcommand{\indexoutertoken}[1]{\index{#1 (syntax)|bold}\index{Syntax!#1|bold}}
+\newcommand{\indexouternonterm}[1]{\index{#1 (syntax)|bold}\index{Syntax!#1|bold}}
+\newcommand{\indexisarcmd}[1]{\index{#1 (command)|bold}\index{Commands!#1|bold}}
+\newcommand{\indexisarmeth}[1]{\index{#1 (method)|bold}\index{Proof methods!#1|bold}}
+\newcommand{\indexisaratt}[1]{\index{#1 (attribute)|bold}\index{Attributes!#1|bold}}
+\newcommand{\indexisarthm}[1]{\index{#1 (theorem)|bold}\index{Theorems!#1|bold}}
 
 \newcommand{\isarcmd}[1]{\isarkeyword{#1}}
 \newcommand{\isartrans}[2]{#1 \mathbin{\,\to\,} #2}