--- calc.texinfo~
+++ calc.texinfo
@@ -5,6 +5,10 @@
 @c [title]
 @settitle GNU Emacs Calc 2.02 Manual
 @setchapternewpage odd
+@dircategory Emacs
+@direntry
+* Calc: (calc).         The GNU Emacs Calculator.
+@end direntry
 @comment %**end of header (This is for running Texinfo on a region.)
 
 @tex