Add a concept index entry for HTML.

diff --git a/texi/gnus.texi b/texi/gnus.texi
index 10c43ec..4be2d8b 100644 (file)
--- a/texi/gnus.texi
+++ b/texi/gnus.texi
@@ -12463,6 +12463,7 @@ Interactively run an action on the @acronym{MIME} object
 
 @end table
 
+@cindex HTML
 If you have @code{w3m} installed on your system, Gnus can display
 @acronum{HTML} articles in the article buffer.  The following
 variables are relevant: