diff --git a/HACKING b/HACKING
index 98da049..bdb0631 100644
--- a/HACKING
+++ b/HACKING
@@ -75,8 +75,8 @@ Bedstead's history to their correct forms.
 
 NOTES - Disorganised jottings about Bedstead and related matters.
 
-editor.py - An interactive editor for Bedstead character shapes.
-Written by Simon Tatham.
+editor - An interactive editor for Bedstead character shapes.
+Written by Simon Tatham and released under CC0.
 
 panose-o.ggb - A GeoGebra file used to work out the PANOSE "Speed" and
 "OutCurv" variables.  Physically takes the form of a Zip file