diff --git a/envelope.asy b/envelope.asy
index 7e52b8c..497775e 100644
--- a/envelope.asy
+++ b/envelope.asy
@@ -19,7 +19,7 @@ string envfmt = "C6";
 // A6: 105 x 148 mm
 
 // debugging tool
-bool with_labels = true;
+bool with_labels = false;
 
 
 // It is unpractical to try emulating second quadrant. We will work in the