diff --git a/python/frep-C.py b/python/frep-C.py
old mode 100644
new mode 100755
index 8999ac5e2b47d66944ee358a96828e3ae287f04e..a54d9c9f97aa18204787b2a11e00e84e178f4c2e
--- a/python/frep-C.py
+++ b/python/frep-C.py
@@ -57,6 +57,8 @@ units = float(frep['mm_per_unit'])
 delta = (25.4/dpi)/units
 fn = frep['function']
 fn = fn.replace('math.','')
+for z in frep['layers']:
+   print(z)
 #
 # write program
 #