diff --git a/src-test/org/graphstream/ui/layout/test/DemoLayout.java b/src-test/org/graphstream/ui/layout/test/DemoLayout.java
index 656fc991a70bbb412be14b44c0e78edd0f579cf8..94c4ae1d81d0edd2ac29b1f1505dc9600b5ca2eb 100644
--- a/src-test/org/graphstream/ui/layout/test/DemoLayout.java
+++ b/src-test/org/graphstream/ui/layout/test/DemoLayout.java
@@ -32,20 +32,28 @@
 
 package org.graphstream.ui.layout.test;
 
+import java.io.IOException;
+
 import org.graphstream.algorithm.generator.BarabasiAlbertGenerator;
 import org.graphstream.algorithm.generator.Generator;
 import org.graphstream.algorithm.generator.GridGenerator;
+import org.graphstream.graph.ElementNotFoundException;
 import org.graphstream.graph.Graph;
 import org.graphstream.graph.implementations.MultiGraph;
+import org.graphstream.stream.GraphParseException;
 
 public class DemoLayout {
-	public static void main(String args[]) {
+	public static void main(String args[]) throws ElementNotFoundException, IOException, GraphParseException {
 		//System.getProperties().put("gs.ui.layout", "org.graphstream.ui.layout.springbox.implementations.LinLog");
 		(new DemoLayout()).test();
 	}
 	
-	public void test() {
+	public void test() throws ElementNotFoundException, IOException, GraphParseException {
 		Graph graph = new MultiGraph("test");
+		graph.display();
+		graph.addAttribute("layout.stabilization-limit", 1);
+		graph.addAttribute("layout.quality", 3);
+		graph.addAttribute("layout.gravity", 0.01);
 //		int steps = 50;
 //		Generator gen = new BarabasiAlbertGenerator(2);
 //		int steps = 6;
@@ -58,9 +66,8 @@ public class DemoLayout {
 //			sleep(10);
 //		}
 //		gen.end();
-		try { graph.read("src-test/org/graphstream/ui/layout/test/data/WorldImport1999.edge"); } catch(Exception e) { e.printStackTrace(); }
-//		try { graph.write("grid7x7.dgs"); } catch(Exception e) { }
-		graph.display();
+		graph.read("src-test/org/graphstream/ui/layout/test/data/fourComponents.dgs");
+//		graph.read("src-test/org/graphstream/ui/layout/test/data/polbooks.gml");
 	}
 	
 	public static void sleep(long ms) {
diff --git a/src-test/org/graphstream/ui/layout/test/data/dolphins.gml b/src-test/org/graphstream/ui/layout/test/data/dolphins.gml
index c25e1a9605f60659b3ec49cf59db1c4f1c3ce8db..f4c2ca395e14962065fe1de98a4538cfc1676fad 100644
--- a/src-test/org/graphstream/ui/layout/test/data/dolphins.gml
+++ b/src-test/org/graphstream/ui/layout/test/data/dolphins.gml
@@ -1,4 +1,3 @@
-Creator "Mark Newman on Wed Jul 26 15:04:20 2006"
 graph
 [
   directed 0
diff --git a/src-test/org/graphstream/ui/layout/test/data/fourComponents.dgs b/src-test/org/graphstream/ui/layout/test/data/fourComponents.dgs
new file mode 100644
index 0000000000000000000000000000000000000000..4ef1dfde469481ea7301f0e0f4f397fd26d0f7f8
--- /dev/null
+++ b/src-test/org/graphstream/ui/layout/test/data/fourComponents.dgs
@@ -0,0 +1,55 @@
+DGS004
+null 0 0
+
+an "0"
+an "1"
+an "2"
+an "3"
+
+an "10"
+an "11"
+an "12"
+an "13"
+
+an "20"
+an "21"
+an "22"
+an "23"
+
+an "30"
+an "31"
+an "32"
+an "33"
+
+ae "0-1" "0" "1"
+ae "0-2" "0" "2"
+ae "0-3" "0" "3"
+ae "1-2" "1" "2"
+ae "1-3" "1" "3"
+ae "2-3" "2" "3"
+
+ae "10-11" "10" "11"
+ae "10-12" "10" "12"
+ae "10-13" "10" "13"
+ae "11-12" "11" "12"
+ae "11-13" "11" "13"
+ae "12-13" "12" "13"
+
+ae "20-11" "20" "21"
+ae "20-12" "20" "22"
+ae "20-13" "20" "23"
+ae "21-12" "21" "22"
+ae "21-13" "21" "23"
+ae "22-13" "22" "23"
+
+ae "30-31" "30" "31"
+ae "30-32" "30" "32"
+ae "30-33" "30" "33"
+ae "31-32" "31" "32"
+ae "31-33" "31" "33"
+ae "32-33" "32" "33"
+
+#ae "inter1" "0" "10"
+#ae "inter2" "10" "20"
+#ae "inter3" "20" "30"
+#ae "inter4" "30" "0"
diff --git a/src-test/org/graphstream/ui/layout/test/data/polbooks.gml b/src-test/org/graphstream/ui/layout/test/data/polbooks.gml
index 0f71806acb98cd8a544c4f9318e9027760dc3288..071eaf384af6e60a6b0070ef13050c8518fb0459 100644
--- a/src-test/org/graphstream/ui/layout/test/data/polbooks.gml
+++ b/src-test/org/graphstream/ui/layout/test/data/polbooks.gml
@@ -1,4 +1,3 @@
-Creator "Mark Newman on Wed Oct 18 16:42:04 2006"
 graph
 [
   directed 0