Update runtime files.
diff --git a/runtime/doc/helphelp.txt b/runtime/doc/helphelp.txt
index c724923..3a06baf 100644
--- a/runtime/doc/helphelp.txt
+++ b/runtime/doc/helphelp.txt
@@ -1,4 +1,4 @@
-*helphelp.txt* For Vim version 8.2. Last change: 2020 Dec 19
+*helphelp.txt* For Vim version 8.2. Last change: 2020 Dec 29
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -158,6 +158,9 @@
will be opened. Otherwise the specified tag is searched for in all "doc/tags"
files in the directories specified in the 'runtimepath' option.
+If you would like to open the help in the current window, see this tip:
+|help-curwin|.
+
The initial height of the help window can be set with the 'helpheight' option
(default 20).