Updated runtime files.
diff --git a/runtime/doc/helphelp.txt b/runtime/doc/helphelp.txt
index 4835f1f..3a9ec68 100644
--- a/runtime/doc/helphelp.txt
+++ b/runtime/doc/helphelp.txt
@@ -1,4 +1,4 @@
-*helphelp.txt* For Vim version 7.4. Last change: 2016 Mar 12
+*helphelp.txt* For Vim version 7.4. Last change: 2016 Mar 26
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -208,9 +208,11 @@
sorted.
When there are duplicates an error message is given.
An existing tags file is silently overwritten.
+
The optional "++t" argument forces adding the
"help-tags" tag. This is also done when the {dir} is
equal to $VIMRUNTIME/doc.
+
To rebuild the help tags in the runtime directory
(requires write permission there): >
:helptags $VIMRUNTIME/doc