diff --git a/flax/fieldsets/demo b/flax/fieldsets/demo
--- a/flax/fieldsets/demo
+++ b/flax/fieldsets/demo
@@ -1,11 +1,3 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<fieldset version='1'>
-  <field y='64.518605176' x='64.4226431666' name='main 2' falloff='10'/>
-  <field y='71.6297059084' x='64.1501958858' name='main 3' falloff='9.44161122397'/>
-  <field y='62.2614165793' x='49.4797562176' name='main 4' falloff='9.02748404992'/>
-  <field y='64.7105473806' x='39.4725745351' name='main 5' falloff='9.02748404992'/>
-  <field y='70.0008620159' x='45.644638445' name='main 7' falloff='9.02748404992'/>
-  <field y='70.7801243766' x='53.963092297' name='main 8' falloff='9.02748404992'/>
-  <field y='68.1676620898' x='74.8416350959' name='main 9' falloff='10.5270359255'/>
-  <field y='62.0408841822' x='79.8677043872' name='main 10' falloff='9.02748404992'/>
-</fieldset>
+light1: x=30 y=40 falloff=10
+light2: x=60 y=50 falloff=30
+light3: x=40 y=50 falloff=20