diff --git a/contexte.inc b/contexte.inc
index 3f44506..93cd4c8 100644
--- a/contexte.inc
+++ b/contexte.inc
@@ -52,10 +52,13 @@ height_field {
 	}
 
 
-#if (0)
-cylinder { 0, <1, 0, 0>, 0.005 pigment { color Red } }
-cylinder { 0, <0, 0, 1>, 0.005 pigment { color Blue } }
-#end
+#declare Repere = object
+{
+union	{
+	cylinder { 0, <1, 0, 0>, 0.007 pigment { color Red } }
+	cylinder { 0, <0, 0, 1>, 0.007 pigment { color Blue } }
+	}
+}
 
 #if (1)
 light_source {