diff --git a/doc/ceg/Makefile b/doc/ceg/Makefile
new file mode 100644
index 000000000..d23c6089d
--- /dev/null
+++ b/doc/ceg/Makefile
@@ -0,0 +1,2 @@
+ceg: 
+	pic -Tps ceg.tr | refer -e -p ceg.ref | tbl | troff -ms -Tps > ceg.dit