add \guilabel macro to mark labels that occur in user interfaces
diff --git a/Doc/html/style.css b/Doc/html/style.css
index f585744..33a1380 100644
--- a/Doc/html/style.css
+++ b/Doc/html/style.css
@@ -123,7 +123,7 @@
 .newsgroup              { font-family: avantgarde, sans-serif; }
 .url                    { font-family: avantgarde, sans-serif; }
 .file                   { font-family: avantgarde, sans-serif; }
-.menuselection          { font-family: avantgarde, sans-serif; }
+.guilabel               { font-family: avantgarde, sans-serif; }
 
 .tableheader            { background-color: #99ccff;
                           font-family: avantgarde, sans-serif; }