diff --git a/build/ludus.mjs b/build/ludus.mjs
index 87bddf6..508e669 100644
--- a/build/ludus.mjs
+++ b/build/ludus.mjs
@@ -309,7 +309,7 @@ export function svg (commands) {
   const path = svg_render_path(states)
   const turtle = svg_render_turtle(states[states.length - 1])
   return `<?xml version="1.0" standalone="no"?>
-<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="${x_origin} ${y_origin} ${view_width} ${view_height}" width="10in", height="8in">
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="${x_origin} ${y_origin} ${view_width} ${view_height}" width="10in" height="8in">
 
   <rect x="${x_origin - 5}" y="${y_origin - 5}" width="${view_width + 10}" height="${view_height + 10}" fill="#${hex(r)}${hex(g)}${hex(b)}" stroke-width="0" paint-order="fill" />
 
diff --git a/build/svg_test.mjs b/build/svg_test.mjs
index 8efbde8..646e899 100644
--- a/build/svg_test.mjs
+++ b/build/svg_test.mjs
@@ -1,66 +1,33 @@
 import {run, svg, stdout} from "./ludus.mjs"
 
 const code = `
-background! (colors :white)
-pencolor! (colors :maroon)
+  penwidth!(7)
+pencolor!(:red)
+background!(:maroon)
 
-fn ngon! (n, edge) -> {
-  repeat n {
-    forward! (edge)
-    right! (inv (n))
+fn ngon! (num_sides, side_len) -> {
+  repeat num_sides {
+    forward! (side_len)
+    right! (inv (num_sides))
   }
 }
 
-fn cngon! (n, radius) -> {
-  let angle = add (inv (4), inv (mult (2, n)))
-  let edge = mult (2, radius, sin (inv (mult (2, n))))
-
-  penup! ()
-  forward! (radius)
-  right! (angle)
-  pendown! ()
-  ngon! (n, edge)
-  left! (angle)
-  penup! ()
-  back! (radius)
-  pendown! ()
+fn show_gons! (n, side_len) -> {
+  if lte? (n, 0) 
+    then :ok
+    else {
+      ngon! (n, side_len)
+      penup!()
+      rt!(0.01)
+      fd!(add (side_len, 10))
+      pendown!()
+      show_gons! (sub (n, 1), side_len)
+    }
 }
 
-fn twisty_nonagons! (times, iter, radius, growth) -> {
-  if gte? (iter, times) then :ok
-  else {
-    cngon! (9, radius)
-    right! (inv (times))
-    twisty_nonagons! (times, inc (iter), add (radius, growth), growth)
-  }
-}
+show_gons! (100, 100)
 
-twisty_nonagons! (10, 0, 100, 3)
-
-fn centre_squares! (times, radius, growth) -> {
-  if lt? (times, 1) then :ok
-  else {
-    cngon! (4, radius)
-    centre_squares! (dec (times), add (radius, growth), growth)
-  } 
-}
-
-& right! (0.125)
-& centre_squares! (10, 100, 4)
-
-fn twisty_triangles! (times, radius, angle, growth) -> {
-  if lt? (times, 1) then :ok
-  else {
-    cngon! (3, radius)
-    right! (angle)
-    twisty_triangles! (dec (times), sub (radius, growth), angle, growth)
-  }
-}
-
-& right! (inv (6))
-& twisty_triangles! (8, 100, inv (120), 10)
-
-& hideturtle! ()
+hideturtle!()
 `
 
 const result = run(code)
diff --git a/package.json b/package.json
index eefabec..93da944 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ludus/ludus-js-pure",
-  "version": "0.1.38",
+  "version": "0.1.37",
   "description": "A Ludus interpreter in a pure JS function.",
   "type": "module",
   "main": "build/ludus.mjs",