diff -Nru bison-1.28/doc/bison.texinfo bison-1.28.new/doc/bison.texinfo
--- bison-1.28/doc/bison.texinfo	Thu Jan 14 16:08:17 1999
+++ bison-1.28.new/doc/bison.texinfo	Wed Jul  7 15:11:43 1999
@@ -37,9 +37,10 @@
 
 @ifinfo
 @format
-START-INFO-DIR-ENTRY
-* bison: (bison).	GNU Project parser generator (yacc replacement).
-END-INFO-DIR-ENTRY
+@dircategory Programming tools:
+@direntry
+* bison: (bison).			The GNU parser generator
+@end direntry
 @end format
 @end ifinfo
 
@@ -126,6 +127,18 @@
 @page
 
 @node Top, Introduction, (dir), (dir)
+@top bison
+
+   "Bison" is a general-purpose parser generator that converts a grammar
+description for an LALR(1) context-free grammar into a C program to parse
+that grammar.  Once you are proficient with Bison, you may use it to develop
+a wide range of language parsers, from those used in simple desk calculators
+to complex programming languages.
+
+   Bison is upward compatible with Yacc: all properly-written Yacc grammars
+ought to work with Bison with no change.  Anyone familiar with Yacc should
+be able to use Bison with little trouble.  You need to be fluent in C
+programming in order to use Bison or to understand this manual.
 
 @ifinfo
 This manual documents version @value{VERSION} of Bison.