--- /dev/null
+<?xml version="1.0" encoding="ISO-8859-1"?>
+
+<screensaver name="substrate" _label="Substrate">
+
+ <command arg="-root"/>
+
+ <number id="init" type="spinbutton" arg="-initial-cracks %"
+ _label="Initial Cracks" low="2" high="15" default="3"/>
+
+ <number id="speed" type="slider" arg="-growth-delay %"
+ _label="Speed" _low-label="Slow" _high-label="Fast"
+ low="0" high="30000" default="18000" convert="invert"/>
+
+ <number id="maxcyc" type="slider" arg="-max-cycles %"
+ _label="Duration" _low-label="Short" _high-label="Long"
+ low="2000" high="25000" default="12000" />
+
+ <number id="sandg" type="slider" arg="-sand-grains %"
+ _label="Sandgrains" _low-label="Few" _high-label="Lots"
+ low="16" high="128" default="64" />
+
+ <boolean id="wire" _label="Wireframe only" arg-set="-wireframe" />
+
+ <_description>
+Lines like crystals grow on a computational substrate. A simple
+perpendicular growth rule creates intricate city-like structures.
+By J. Tarbell and Mike Kershaw.
+ </_description>
+</screensaver>