updated for version 7.0021
diff --git a/runtime/doc/Makefile b/runtime/doc/Makefile
index 8da592c..94bf805 100644
--- a/runtime/doc/Makefile
+++ b/runtime/doc/Makefile
@@ -36,6 +36,7 @@
 	help.txt \
 	howto.txt \
 	if_cscop.txt \
+	if_mzsch.txt \
 	if_ole.txt \
 	if_perl.txt \
 	if_pyth.txt \
@@ -156,6 +157,7 @@
 	help.html \
 	howto.html \
 	if_cscop.html \
+	if_mzsch.html \
 	if_ole.html \
 	if_perl.html \
 	if_pyth.html \