diff --git a/postscript.ps b/postscript.ps
index d9fe9a17..2bed27a4 100644
--- a/postscript.ps
+++ b/postscript.ps
@@ -1,2 +1,2 @@
-%gs
+% run> gs -q -sDEVICE=nullpage postscript.ps
 (Hello world!\n) print quit
\ No newline at end of file