Move text from various.txt to a new helphelp.txt help file.
diff --git a/runtime/doc/Makefile b/runtime/doc/Makefile
index 2f69750..a8a6410 100644
--- a/runtime/doc/Makefile
+++ b/runtime/doc/Makefile
@@ -37,6 +37,7 @@
 	hangulin.txt \
 	hebrew.txt \
 	help.txt \
+	helphelp.txt \
 	howto.txt \
 	if_cscop.txt \
 	if_mzsch.txt \