diff --git a/htroot/WatchWebStructure_p.html b/htroot/WatchWebStructure_p.html
index b6b29260c..1afd9eea6 100644
--- a/htroot/WatchWebStructure_p.html
+++ b/htroot/WatchWebStructure_p.html
@@ -22,8 +22,11 @@
 #%env/templates/header.template%# 
 #%env/templates/submenuWebStructure.template%#
 
-<div id="api"><a href="/api/webstructure.xml"><img src="env/grafics/api.png"></a>
-<span>The data that is visualized here can also be retrieved in a XML file. The XM L contains a back-reference of domains. That means you can see the set of domains that all link to the same (other) domain, which could be called a 'reverse domain index'.
+<div id="api"><a href="/api/webstructure.xml?about=#[besthost]#"><img src="env/grafics/api.png"></a>
+<span>
+The data that is visualized here can also be retrieved in a XML file, which lists the reference relation between the domains.
+With a GET-property 'about' you get only reference relations about the host that you give in the argument field for 'about'.
+With a GET-property 'latest' you get a list of references that had been computed during the current run-time of YaCy, and with each next call only an update to the next list of references.
 Click the API icon to see the XML file.
 To see a list of all APIs, please visit the <a href="http://www.yacy-websuche.de/wiki/index.php/Dev:API">API wiki page</a>.</span>
 </div>
@@ -33,7 +36,8 @@ To see a list of all APIs, please visit the <a href="http://www.yacy-websuche.de
 
 <div id="left">
 <form action="/WatchWebStructure_p.html">
-<dl>
+<fieldset>
+  <dl>
 	<dt>host</dt>
 	<dd>
 	  <input type="text" value="#[host]#" name="host" id="host" size="20" maxlength="80" />
@@ -57,14 +61,15 @@ To see a list of all APIs, please visit the <a href="http://www.yacy-websuche.de
 	  <a href="WatchWebStructure_p.html?host=#[host]#&amp;depth=#[depth]#&amp;width=#[width]#&amp;height=#[height]#&amp;nodes=#[nodes]#&amp;time=#[timei]#"><img src="env/grafics/plus.gif"  alt="plus"/></a>
 	</dd>
     <dt>size</dt>
-	<dd><input type="text" name="width" value="#[width]#" size="4" maxlength="4" />&nbsp;x&nbsp;<input type="text" name="height" value="#[height]#" size="4" maxlength="4" /></dd>
+	<dd><input type="text" name="width" value="#[width]#" size="5" maxlength="5" />&nbsp;x&nbsp;<input type="text" name="height" value="#[height]#" size="5" maxlength="5" /></dd>
     <dt>&nbsp;</dt>
     <dd><input type="submit" value="change" /></dd>
-</dl>
+  </dl>
+</fieldset>
 </form>
-</div>
+</div><br>
 
-<img src="WebStructurePicture_p.png?host=#[host]#&amp;depth=#[depth]#&amp;width=#[width]#&amp;height=#[height]#&amp;nodes=#[nodes]#&amp;time=#[time]#" alt="WebStructurePicture"/>
+<img align="right" src="WebStructurePicture_p.png?host=#[besthost]#&amp;depth=#[depth]#&amp;width=#[width]#&amp;height=#[height]#&amp;nodes=#[nodes]#&amp;time=#[time]#" alt="WebStructurePicture"/>
 
 #%env/templates/footer.template%# 
 </body>
diff --git a/htroot/WatchWebStructure_p.java b/htroot/WatchWebStructure_p.java
index a3fbcb9d5..987fd7d9e 100644
--- a/htroot/WatchWebStructure_p.java
+++ b/htroot/WatchWebStructure_p.java
@@ -20,6 +20,7 @@ public class WatchWebStructure_p {
         int nodes = 500; // maximum number of host nodes that are painted
         int time = -1;
         String host = "auto";
+        String besthost;
         
         if (post != null) {
             width = post.getInt("width", 768);
@@ -49,7 +50,16 @@ public class WatchWebStructure_p {
             }
         }
         
+        // find start point
+        if ((host == null) || (host.length() == 0) || (host.equals("auto"))) {
+            // find domain with most references
+            besthost = sb.webStructure.hostWithMaxReferences();
+        } else {
+            besthost = host;
+        }
+        
         prop.putHTML("host", host);
+        prop.putHTML("besthost", besthost);
         prop.put("depth", depth);
         prop.put("depthi", Math.min(8, depth + 1));
         prop.put("depthd", Math.max(0, depth - 1));
diff --git a/htroot/WebStructurePicture_p.java b/htroot/WebStructurePicture_p.java
index 1d7756677..447a1ad93 100644
--- a/htroot/WebStructurePicture_p.java
+++ b/htroot/WebStructurePicture_p.java
@@ -65,11 +65,11 @@ public class WebStructurePicture_p {
             host = post.get("host", null);
         }
         
-        //too small values lead to an error, too big to huge CPU/memory consumption, resulting in possible DOS.
+        // too small values lead to an error, too big to huge CPU/memory consumption, resulting in possible DOS.
         if (width < 32 ) width = 32;
-        if (width > 1920) width = 1920;
+        if (width > 10000) width = 10000;
         if (height < 24) height = 24;
-        if (height > 1920) height = 1920;
+        if (height > 10000) height = 10000;
         if (depth > 8) depth = 8;
         if (depth < 0) depth = 0;
         
diff --git a/source/de/anomic/plasma/plasmaWebStructure.java b/source/de/anomic/plasma/plasmaWebStructure.java
index b13a779b8..353ff9400 100644
--- a/source/de/anomic/plasma/plasmaWebStructure.java
+++ b/source/de/anomic/plasma/plasmaWebStructure.java
@@ -176,7 +176,7 @@ public class plasmaWebStructure {
     
     private static int refstr2count(final String refs) {
         if ((refs == null) || (refs.length() <= 8)) return 0;
-        assert (refs.length() - 8) % 10 == 0;
+        assert (refs.length() - 8) % 10 == 0 : "refs = " + refs + ", length = " + refs.length();
         return (refs.length() - 8) / 10;
     }
     
@@ -471,21 +471,20 @@ public class plasmaWebStructure {
 
         private void next0() {
             Map.Entry<String, String> entry = null;
-            String dom = null, ref;
+            String dom = null, ref = "";
             while (i.hasNext()) {
                 entry = i.next();
+                ref = entry.getValue();
+                if ((ref.length() - 8) % 10 != 0) continue;
                 dom = entry.getKey();
                 if (dom.length() >= 8) break;
-                if (!i.hasNext()) {
-                    nextentry = null;
-                    return;
-                }
+                dom = null;
             }
             if ((entry == null) || (dom == null)) {
                 nextentry = null;
                 return;
             }
-            ref = entry.getValue();
+            assert (ref.length() - 8) % 10 == 0 : "refs = " + ref + ", length = " + ref.length();
             nextentry = new structureEntry(dom.substring(0, 6), dom.substring(7), ref.substring(0, 8), refstr2map(ref));
         }