diff --git a/extra/cfdg/models/spirales/spirales.factor b/extra/cfdg/models/spirales/spirales.factor
index 985c21643e..f804b6ba83 100644
--- a/extra/cfdg/models/spirales/spirales.factor
+++ b/extra/cfdg/models/spirales/spirales.factor
@@ -7,33 +7,19 @@ DEFER: line
 
 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
-: block ( -- )
-  [
-    [ circle ] do
-    [ 0.3 s 60 flip line ] do
-  ]
-  recursive ;
+: block ( -- ) { [ circle ] [ 0.3 s 60 flip line ] } rule ;
 
-: a1 ( -- )
-  [
-    [ 0.95 s 2 x 12 r 0.5 b 10 hue 1.5 sat a1 ] do
-    [ block ] do
-  ]
-  recursive ;
+: a1 ( -- ) { [ 0.95 s 2 x 12 r 0.5 b 10 hue 1.5 sat a1 ] [ block ] } rule ;
 
-: line ( -- )
-  -0.3 a
-  [   0 rotate a1 ] do
-  [ 120 rotate a1 ] do
-  [ 240 rotate a1 ] do ;
+: line ( -- ) -0.3 a { [ 0 r a1 ] [ 120 r a1 ] [ 240 r a1 ] } rule ;
 
 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
 : init ( -- )
-  [ -1 b ] >background
-  { -20 40 -20 40 } viewport set
-  [ line ] >start-shape
-  0.03 >threshold ;
+  [ -1 b ]          >background
+  { -20 40 -20 40 } >viewport
+  [ line ]          >start-shape
+  0.04              >threshold ;
 
 : run ( -- ) [ init ] cfdg-window. ;