diff --git a/src/as/com/threerings/whirled/data/DefaultSceneConfig.as b/src/as/com/threerings/whirled/data/DefaultSceneConfig.as
index 6cb4515e..cd64d4e7 100644
--- a/src/as/com/threerings/whirled/data/DefaultSceneConfig.as
+++ b/src/as/com/threerings/whirled/data/DefaultSceneConfig.as
@@ -36,6 +36,11 @@ import com.threerings.whirled.client.SceneController;
  */
 public class DefaultSceneConfig extends PlaceConfig
 {
+    public function DefaultSceneConfig ()
+    {
+        // nothing needed
+    }
+
     // documentation inherited
     override public function getManagerClassName () :String
     {
diff --git a/src/as/com/threerings/whirled/data/SceneModel.as b/src/as/com/threerings/whirled/data/SceneModel.as
index 5e35168f..817a0179 100644
--- a/src/as/com/threerings/whirled/data/SceneModel.as
+++ b/src/as/com/threerings/whirled/data/SceneModel.as
@@ -26,7 +26,7 @@ import com.threerings.util.Cloneable;
 
 import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
-import com.threerings.io.Streamable;
+import com.threerings.io.SimpleStreamableObject;
 import com.threerings.io.TypedArray;
 
 /**
@@ -38,8 +38,8 @@ import com.threerings.io.TypedArray;
  * what is transmitted over the wire when communicating scenes from the
  * server to the client.
  */
-public class SceneModel
-    implements Streamable, Cloneable
+public class SceneModel extends SimpleStreamableObject
+    implements Cloneable
 {
     /** This scene's unique identifier. */
     public var sceneId :int;
@@ -56,6 +56,21 @@ public class SceneModel
     /** Auxiliary scene model information. */
     public var auxModels :TypedArray = TypedArray.create(AuxModel);
 
+    /**
+     * Creates and returns a blank scene model.
+     */
+    public static function blankSceneModel () :SceneModel
+    {
+        var model :SceneModel = new SceneModel();
+        populateBlankSceneModel(model);
+        return model;
+    }
+
+    public function SceneModel ()
+    {
+        // nothing needed
+    }
+
     /**
      * Adds the specified auxiliary model to this scene model.
      */
@@ -81,31 +96,23 @@ public class SceneModel
     }
 
     // documentation inherited from interface Streamable
-    public function writeObject (out :ObjectOutputStream) :void
-    {
-        out.writeInt(sceneId);
-        out.writeField(name);
-        out.writeInt(version);
-        out.writeObject(auxModels);
-    }
-
-    // documentation inherited from interface Streamable
-    public function readObject (ins :ObjectInputStream) :void
+    override public function readObject (ins :ObjectInputStream) :void
     {
+        super.readObject(ins);
         sceneId = ins.readInt();
         name = (ins.readField(String) as String);
         version = ins.readInt();
         auxModels = (ins.readObject() as TypedArray);
     }
 
-    /**
-     * Creates and returns a blank scene model.
-     */
-    public static function blankSceneModel () :SceneModel
+    // documentation inherited from interface Streamable
+    override public function writeObject (out :ObjectOutputStream) :void
     {
-        var model :SceneModel = new SceneModel();
-        populateBlankSceneModel(model);
-        return model;
+        super.writeObject(out);
+        out.writeInt(sceneId);
+        out.writeField(name);
+        out.writeInt(version);
+        out.writeObject(auxModels);
     }
 
     /**
diff --git a/src/as/com/threerings/whirled/data/SceneUpdate.as b/src/as/com/threerings/whirled/data/SceneUpdate.as
index fa1798c2..834c5cbf 100644
--- a/src/as/com/threerings/whirled/data/SceneUpdate.as
+++ b/src/as/com/threerings/whirled/data/SceneUpdate.as
@@ -29,26 +29,36 @@ import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
 import com.threerings.io.Streamable;
 
+import com.threerings.util.Cloneable;
+
 /**
  * Used to encapsulate updates to scenes in such a manner that updates can
  * be stored persistently and sent to clients to update their own local
  * copies of scenes.
  */
 public class SceneUpdate
-    implements Streamable /*, Cloneable */
+    implements Streamable, Cloneable
 {
-    /**
-     * Initializes this scene update such that it will operate on a scene
-     * with the specified target scene and version number.
-     *
-     * @param targetId the id of the scene on which we are to operate.
-     * @param targetVersion the version of the scene on which we are to
-     * operate.
-     */
-    public function init (targetId :int, targetVersion :int) :void
+    public function SceneUpdate ()
     {
-        _targetId = targetId;
-        _targetVersion = targetVersion;
+        // nothing needed
+    }
+
+    /**
+     * Applies this update to the specified scene model. Derived classes
+     * will want to override this method and apply updates of their own,
+     * being sure to call <code>super.apply</code>.
+     */
+    public function apply (model :SceneModel) :void
+    {
+        // increment the version; disallowing integer overflow
+        model.version = Math.max(_targetVersion + 1, model.version);
+
+        // sanity check for the amazing two billion updates
+        if (model.version == _targetVersion) {
+            Log.getLog(this).warning("Egads! This scene has been updated two" +
+                " billion times [model=" + model + ", update=" + this + "].");
+        }
     }
 
     /**
@@ -67,6 +77,44 @@ public class SceneUpdate
         return _targetVersion;
     }
 
+    /**
+     * Generates a string representation of this instance.
+     */
+    public function toString () :String
+    {
+        var buf :StringBuilder = new StringBuilder("[");
+        toStringBuilder(buf);
+        return buf.append("]").toString();
+    }
+
+    /**
+     * Initializes this scene update such that it will operate on a scene
+     * with the specified target scene and version number.
+     *
+     * @param targetId the id of the scene on which we are to operate.
+     * @param targetVersion the version of the scene on which we are to
+     * operate.
+     */
+    public function init (targetId :int, targetVersion :int) :void
+    {
+        _targetId = targetId;
+        _targetVersion = targetVersion;
+    }
+
+    // from interface Streamable
+    public function writeObject (out :ObjectOutputStream) :void
+    {
+        out.writeInt(_targetId);
+        out.writeInt(_targetVersion);
+    }
+
+    // from interface Streamable
+    public function readObject (ins :ObjectInputStream) :void
+    {
+        _targetId = ins.readInt();
+        _targetVersion = ins.readInt();
+    }
+
     /**
      * Called to ensure that the scene is in the appropriate state prior
      * to applying the update.
@@ -90,54 +138,17 @@ public class SceneUpdate
         }
     }
 
-    /**
-     * Applies this update to the specified scene model. Derived classes
-     * will want to override this method and apply updates of their own,
-     * being sure to call <code>super.apply</code>.
-     */
-    public function apply (model :SceneModel) :void
+    // from interface Cloneable
+    public function clone () :Object
     {
-        // increment the version; disallowing integer overflow
-        model.version = Math.max(_targetVersion + 1, model.version);
-
-        // sanity check for the amazing two billion updates
-        if (model.version == _targetVersion) {
-            Log.getLog(this).warning("Egads! This scene has been updated two" +
-                " billion times [model=" + model + ", update=" + this + "].");
-        }
-    }
-
-    // documentation inherited from interface Streamable
-    public function writeObject (out :ObjectOutputStream) :void
-        //throws IOException
-    {
-        out.writeInt(_targetId);
-        out.writeInt(_targetVersion);
-    }
-
-    // documentation inherited from interface Streamable
-    public function readObject (ins :ObjectInputStream) :void
-        //throws IOException, ClassNotFoundException
-    {
-        _targetId = ins.readInt();
-        _targetVersion = ins.readInt();
-    }
-
-    /**
-     * Generates a string representation of this instance.
-     */
-    public function toString () :String
-    {
-        var buf :StringBuilder = new StringBuilder("[");
-        toStringBuf(buf);
-        return buf.append("]").toString();
+        throw new Error("Not implemented.");
     }
 
     /**
      * An extensible mechanism for generating a string representation of
      * this instance.
      */
-    protected function toStringBuf (buf :StringBuilder) :void
+    protected function toStringBuilder (buf :StringBuilder) :void
     {
         buf.append("sceneId=").append(_targetId);
         buf.append(", version=").append(_targetVersion);
diff --git a/src/as/com/threerings/whirled/spot/data/Cluster.as b/src/as/com/threerings/whirled/spot/data/Cluster.as
index 47fde87f..c5d25c0b 100644
--- a/src/as/com/threerings/whirled/spot/data/Cluster.as
+++ b/src/as/com/threerings/whirled/spot/data/Cluster.as
@@ -23,6 +23,8 @@ package com.threerings.whirled.spot.data {
 
 import flash.geom.Rectangle;
 
+import com.threerings.util.Hashable;
+
 import com.threerings.io.Streamable;
 import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
@@ -33,38 +35,23 @@ import com.threerings.presents.dobj.DSet_Entry;
  * Contains information on clusters.
  */
 public class Cluster extends Rectangle
-    implements DSet_Entry, Streamable
+    implements DSet_Entry, Streamable /*, Hashable */
 {
     /** A unique identifier for this cluster (also the distributed object
      * id of the cluster chat object). */
     public var clusterOid :int;
 
-    // documentation inherited from interface DSet_Entry
-    public function getKey () :Object
+    public function Cluster ()
+    {
+        // nothing needed
+    }
+
+    // documentation inherited
+    public function hashCode () :int
     {
         return clusterOid;
     }
 
-    // documentation inherited from interface Streamable
-    public function writeObject (out :ObjectOutputStream) :void
-    {
-        out.writeInt(x);
-        out.writeInt(y);
-        out.writeInt(width);
-        out.writeInt(height);
-        out.writeInt(clusterOid);
-    }
-
-    // documentation inherited from interface Streamable
-    public function readObject (ins :ObjectInputStream) :void
-    {
-        x = ins.readInt();
-        y = ins.readInt();
-        width = ins.readInt();
-        height = ins.readInt();
-        clusterOid = ins.readInt();
-    }
-
     /**
      * Generates a string representation of this instance.
      */
@@ -72,5 +59,26 @@ public class Cluster extends Rectangle
     {
         return super.toString() + ", clusterOid=" + clusterOid;
     }
+
+    // documentation inherited from interface DSet_Entry
+    public function getKey () :Object
+    {
+        return clusterOid;
+    }
+
+    // documentation inherited from interface Streamable
+    public function readObject (ins :ObjectInputStream) :void
+    {
+        clusterOid = ins.readInt();
+    }
+
+    // documentation inherited from interface Streamable
+    public function writeObject (out :ObjectOutputStream) :void
+    {
+        out.writeInt(clusterOid);
+    }
+
+    /** Used for {@link #getKey}. */
+    protected var _key :int;
 }
 }
diff --git a/src/as/com/threerings/whirled/spot/data/ModifyPortalsUpdate.as b/src/as/com/threerings/whirled/spot/data/ModifyPortalsUpdate.as
index 7c90dfa7..b6ede842 100644
--- a/src/as/com/threerings/whirled/spot/data/ModifyPortalsUpdate.as
+++ b/src/as/com/threerings/whirled/spot/data/ModifyPortalsUpdate.as
@@ -39,17 +39,9 @@ public class ModifyPortalsUpdate extends SceneUpdate
     /** The portals to be added to the scene. */
     public var portalsAdded :TypedArray;
 
-    /**
-     * Initialize the update with all necessary data.
-     */
-    public function initialize (
-            targetId :int, targetVersion :int, removed :TypedArray,
-            added :TypedArray) :void
+    public function ModifyPortalsUpdate ()
     {
-        init(targetId, targetVersion);
-
-        portalsRemoved = removed;
-        portalsAdded = added;
+        // nothing needed
     }
 
     override public function apply (model :SceneModel) :void
@@ -72,20 +64,33 @@ public class ModifyPortalsUpdate extends SceneUpdate
         }
     }
 
-    override public function writeObject (out :ObjectOutputStream) :void
+    /**
+     * Initialize the update with all necessary data.
+     */
+    public function initialize (
+            targetId :int, targetVersion :int, removed :TypedArray,
+            added :TypedArray) :void
     {
-        super.writeObject(out);
+        init(targetId, targetVersion);
 
-        out.writeObject(portalsRemoved);
-        out.writeObject(portalsAdded);
+        portalsRemoved = removed;
+        portalsAdded = added;
     }
 
+    // from interface Streamable
     override public function readObject (ins :ObjectInputStream) :void
     {
         super.readObject(ins);
-
         portalsRemoved = (ins.readObject() as TypedArray);
         portalsAdded = (ins.readObject() as TypedArray);
     }
+
+    // from interface Streamable
+    override public function writeObject (out :ObjectOutputStream) :void
+    {
+        super.writeObject(out);
+        out.writeObject(portalsRemoved);
+        out.writeObject(portalsAdded);
+    }
 }
 }
diff --git a/src/as/com/threerings/whirled/spot/data/Portal.as b/src/as/com/threerings/whirled/spot/data/Portal.as
index 1a119532..ecaf3d5b 100644
--- a/src/as/com/threerings/whirled/spot/data/Portal.as
+++ b/src/as/com/threerings/whirled/spot/data/Portal.as
@@ -23,10 +23,12 @@ package com.threerings.whirled.spot.data {
 
 import com.threerings.util.ClassUtil;
 import com.threerings.util.Cloneable;
+import com.threerings.util.Hashable;
+import com.threerings.util.StringBuilder;
 
-import com.threerings.io.Streamable;
 import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
+import com.threerings.io.SimpleStreamableObject;
 
 import com.threerings.util.Hashable;
 
@@ -39,15 +41,14 @@ import com.threerings.util.Hashable;
  * when using this portal and the location at which the body sprite should
  * appear in that target scene.
  */
-public class Portal
-    implements Streamable, Hashable, Cloneable
+public class Portal extends SimpleStreamableObject
+    implements Cloneable, Hashable
 {
     /** This portal's unique identifier. */
     public var portalId :int;
 
-    /** The location of the portal. Typically this is a base Location (2d)
-     * class, but different games could use a different subclass of
-     * Location. */
+    /** The location of the portal.
+     * This field is present on client and server, it is streamed specially. */
     public var loc :Location;
 
     /** The scene identifier of the scene to which a body will exit when
@@ -55,16 +56,13 @@ public class Portal
     public var targetSceneId :int;
 
     /** The portal identifier of the portal at which a body will enter
-     * the target scene when they "use" this portal. */
+     * the target scene when they "use" this portal, or -1 to specify
+     * that the body enters on the default portal, whatever id it is.  */
     public var targetPortalId :int;
 
-    /**
-     * Returns a location instance configured with the location and
-     * orientation of this portal.
-     */
-    public function getLocation () :Location
+    public function Portal ()
     {
-        return (loc.clone() as Location);
+        // nothing needed
     }
 
     /**
@@ -79,34 +77,10 @@ public class Portal
         return loc.getOpposite();
     }
 
-    /**
-     * Returns true if the portal has a potentially valid target scene and
-     * portal id (they are not guaranteed to exist, but they are at least
-     * potentially valid values rather than 0).
-     */
-    public function isValid () :Boolean
+    // documentation inherited from interface Hashable
+    public function hashCode () :int
     {
-        return (targetSceneId > 0) &&
-            // the target portal must be positive, or -1
-            ((targetPortalId > 0) || (targetPortalId == -1));
-    }
-
-    // documentation inherited from interface Streamable
-    public function writeObject (out :ObjectOutputStream) :void
-    {
-        out.writeShort(portalId);
-        out.writeObject(loc);
-        out.writeInt(targetSceneId);
-        out.writeShort(targetPortalId);
-    }
-
-    // documentation inherited from interface Streamable
-    public function readObject (ins :ObjectInputStream) :void
-    {
-        portalId = ins.readShort();
-        loc = (ins.readObject() as Location);
-        targetSceneId = ins.readInt();
-        targetPortalId = ins.readShort();
+        return portalId;
     }
 
     // documentation inherited from interface Cloneable
@@ -127,16 +101,53 @@ public class Portal
             ((other as Portal).portalId == portalId);
     }
 
-    // documentation inherited from interface Hashable
-    public function hashCode () :int
+    /**
+     * Returns a location instance configured with the location and
+     * orientation of this portal.
+     */
+    public function getLocation () :Location
     {
-        return portalId;
+        return (loc.clone() as Location);
     }
 
-    public function toString () :String
+    /**
+     * Returns true if the portal has a potentially valid target scene and
+     * portal id (they are not guaranteed to exist, but they are at least
+     * potentially valid values rather than 0).
+     */
+    public function isValid () :Boolean
     {
-        return "Portal[id=" + portalId + ", destScene=" + targetSceneId +
-            ", loc=" + loc + "].";
+        return (targetSceneId > 0) &&
+            // the target portal must be positive, or -1
+            ((targetPortalId > 0) || (targetPortalId == -1));
+    }
+
+    // from interface Streamable
+    override public function readObject (ins :ObjectInputStream) :void
+    {
+        super.readObject(ins);
+        portalId = ins.readShort();
+        loc = (ins.readObject() as Location);
+        targetSceneId = ins.readInt();
+        targetPortalId = ins.readShort();
+    }
+
+    // from interface Streamable
+    override public function writeObject (out :ObjectOutputStream) :void
+    {
+        super.writeObject(out);
+        out.writeShort(portalId);
+        out.writeObject(loc);
+        out.writeInt(targetSceneId);
+        out.writeShort(targetPortalId);
+    }
+
+    // from SimpleStreamableObject
+    override protected function toStringBuilder (buf :StringBuilder): void
+    {
+        buf.append("id=").append(portalId);
+        buf.append(", destScene=").append(targetSceneId);
+        buf.append(", loc=").append(loc);
     }
 }
 }
diff --git a/src/as/com/threerings/whirled/spot/data/SceneLocation.as b/src/as/com/threerings/whirled/spot/data/SceneLocation.as
index 0469cb2e..6ecca1cc 100644
--- a/src/as/com/threerings/whirled/spot/data/SceneLocation.as
+++ b/src/as/com/threerings/whirled/spot/data/SceneLocation.as
@@ -25,6 +25,7 @@ import com.threerings.util.Hashable;
 
 import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
+import com.threerings.io.SimpleStreamableObject;
 
 import com.threerings.presents.dobj.DSet_Entry;
 
@@ -32,7 +33,7 @@ import com.threerings.presents.dobj.DSet_Entry;
  * Extends {@link Location} with the data and functionality needed to
  * represent a particular user's location in a scene.
  */
-public class SceneLocation
+public class SceneLocation extends SimpleStreamableObject
     implements DSet_Entry, Hashable
 {
     /** The oid of the body that occupies this location. */
@@ -50,10 +51,10 @@ public class SceneLocation
         this.bodyOid = bodyOid;
     }
 
-    // documentation inherited from interface DSet_Entry
-    public function getKey () :Object
+    // documentation inherited from interface Hashable
+    public function hashCode () :int
     {
-        return bodyOid;
+        return loc.hashCode();
     }
 
     // documentation inherited from interface Hashable
@@ -63,24 +64,29 @@ public class SceneLocation
             this.loc.equals((other as SceneLocation).loc);
     }
 
-    // documentation inherited from interface Hashable
-    public function hashCode () :int
+    // documentation inherited from interface DSet_Entry
+    public function getKey () :Object
     {
-        return loc.hashCode();
+        return bodyOid;
     }
 
     // documentation inherited from superinterface Streamable
-    public function writeObject (out :ObjectOutputStream) :void
+    override public function readObject (ins :ObjectInputStream) :void
     {
+        super.readObject(ins);
+        bodyOid = ins.readInt();
+        loc = (ins.readObject() as Location);
+    }
+
+    // documentation inherited from superinterface Streamable
+    override public function writeObject (out :ObjectOutputStream) :void
+    {
+        super.writeObject(out);
         out.writeInt(bodyOid);
         out.writeObject(loc);
     }
 
-    // documentation inherited from superinterface Streamable
-    public function readObject (ins :ObjectInputStream) :void
-    {
-        bodyOid = ins.readInt();
-        loc = (ins.readObject() as Location);
-    }
+    /** Used for {@link #getKey}. */
+    protected var _key :int;
 }
 }
diff --git a/src/as/com/threerings/whirled/spot/data/SpotSceneModel.as b/src/as/com/threerings/whirled/spot/data/SpotSceneModel.as
index 8b323507..0206faef 100644
--- a/src/as/com/threerings/whirled/spot/data/SpotSceneModel.as
+++ b/src/as/com/threerings/whirled/spot/data/SpotSceneModel.as
@@ -24,9 +24,9 @@ package com.threerings.whirled.spot.data {
 import com.threerings.util.ArrayUtil;
 import com.threerings.util.ClassUtil;
 
-import com.threerings.io.Streamable;
 import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
+import com.threerings.io.SimpleStreamableObject;
 import com.threerings.io.TypedArray;
 
 import com.threerings.whirled.data.AuxModel;
@@ -38,8 +38,8 @@ import com.threerings.whirled.data.SceneModel;
  * scene and unchanging, so that portals can stably reference the target
  * portal in the scene to which they connect.
  */
-public class SpotSceneModel
-    implements Streamable, AuxModel
+public class SpotSceneModel extends SimpleStreamableObject
+    implements AuxModel
 {
     /** An array containing all portals in this scene. */
     public var portals :TypedArray = TypedArray.create(Portal);
@@ -49,48 +49,6 @@ public class SpotSceneModel
      * portal at which they would appear. */
     public var defaultEntranceId :int = -1;
 
-    /**
-     * Adds a portal to this scene model.
-     */
-    public function addPortal (portal :Portal) :void
-    {
-        portals.push(portal);
-    }
-
-    /**
-     * Removes a portal from this model.
-     */
-    public function removePortal (portal :Portal) :void
-    {
-        ArrayUtil.removeFirst(portals, portal);
-    }
-
-    // documentation inherited from superinterface Cloneable
-    public function clone () :Object
-    {
-        var clazz :Class = ClassUtil.getClass(this);
-        var model :SpotSceneModel = new clazz();
-
-        for each (var portal :Portal in portals) {
-            model.portals.push(portal.clone());
-        }
-        return model;
-    }
-
-    // documentation inherited from interface Streamable
-    public function writeObject (out :ObjectOutputStream) :void
-    {
-        out.writeObject(portals);
-        out.writeInt(defaultEntranceId);
-    }
-
-    // documentation inherited from interface Streamable
-    public function readObject (ins :ObjectInputStream) :void
-    {
-        portals = (ins.readObject() as TypedArray);
-        defaultEntranceId = ins.readInt();
-    }
-
     /**
      * Locates and returns the {@link SpotSceneModel} among the auxiliary
      * scene models associated with the supplied scene
@@ -106,5 +64,54 @@ public class SpotSceneModel
         }
         return null;
     }
+
+    public function SpotSceneModel ()
+    {
+        // nothing needed
+    }
+
+    /**
+     * Removes a portal from this model.
+     */
+    public function removePortal (portal :Portal) :void
+    {
+        ArrayUtil.removeFirst(portals, portal);
+    }
+
+    /**
+     * Adds a portal to this scene model.
+     */
+    public function addPortal (portal :Portal) :void
+    {
+        portals.push(portal);
+    }
+
+    // documentation inherited from superinterface Cloneable
+    public function clone () :Object
+    {
+        var clazz :Class = ClassUtil.getClass(this);
+        var model :SpotSceneModel = new clazz();
+
+        for each (var portal :Portal in portals) {
+            model.portals.push(portal.clone());
+        }
+        return model;
+    }
+
+    // from interface Streamable
+    override public function readObject (ins :ObjectInputStream) :void
+    {
+        super.readObject(ins);
+        portals = (ins.readObject() as TypedArray);
+        defaultEntranceId = ins.readInt();
+    }
+
+    // from interface Streamable
+    override public function writeObject (out :ObjectOutputStream) :void
+    {
+        super.writeObject(out);
+        out.writeObject(portals);
+        out.writeInt(defaultEntranceId);
+    }
 }
 }
diff --git a/src/java/com/threerings/whirled/data/SceneUpdate.java b/src/java/com/threerings/whirled/data/SceneUpdate.java
index d593f6b1..ebcf454d 100644
--- a/src/java/com/threerings/whirled/data/SceneUpdate.java
+++ b/src/java/com/threerings/whirled/data/SceneUpdate.java
@@ -28,6 +28,7 @@ import com.samskivert.util.StringUtil;
 import com.threerings.io.ObjectInputStream;
 import com.threerings.io.ObjectOutputStream;
 import com.threerings.io.Streamable;
+import com.threerings.util.ActionScript;
 
 import com.threerings.whirled.Log;
 
@@ -142,6 +143,7 @@ public class SceneUpdate
      * scene id and version fields are stored in separate columns and the rest
      * if the representation is contained in an opaque blob.
      */
+    @ActionScript(omit=true)
     public void persistTo (ObjectOutputStream out)
         throws IOException
     {
@@ -157,6 +159,7 @@ public class SceneUpdate
      * Unserializes this instance from the bare representation created by
      * {@link #persistTo}.
      */
+    @ActionScript(omit=true)
     public void unpersistFrom (ObjectInputStream in)
         throws IOException, ClassNotFoundException
     {
@@ -167,7 +170,7 @@ public class SceneUpdate
             _dbSer.set(null);
         }
     }
-    
+
     /**
      * Generates a string representation of this instance.
      */
@@ -182,6 +185,7 @@ public class SceneUpdate
      * An extensible mechanism for generating a string representation of
      * this instance.
      */
+    @ActionScript(name="toStringBuilder")
     protected void toString (StringBuilder buf)
     {
         buf.append("sceneId=").append(_targetId);
@@ -195,7 +199,8 @@ public class SceneUpdate
 
     /** The version number of the scene on which we operate. */
     protected transient int _targetVersion;
-    
+
     /** Used when serializing this update for storage in the database. */
+    @ActionScript(omit=true)
     protected static ThreadLocal<Boolean> _dbSer = new ThreadLocal<Boolean>();
 }
diff --git a/src/java/com/threerings/whirled/spot/data/Cluster.java b/src/java/com/threerings/whirled/spot/data/Cluster.java
index ee6967a0..199fdb91 100644
--- a/src/java/com/threerings/whirled/spot/data/Cluster.java
+++ b/src/java/com/threerings/whirled/spot/data/Cluster.java
@@ -26,6 +26,7 @@ import java.awt.Rectangle;
 import com.samskivert.util.StringUtil;
 
 import com.threerings.io.Streamable;
+import com.threerings.util.ActionScript;
 
 import com.threerings.presents.dobj.DSet;
 
@@ -49,6 +50,7 @@ public class Cluster extends Rectangle
     }
 
     // documentation inherited
+    @ActionScript(omit=true)
     public boolean equals (Object other)
     {
         if (other instanceof Cluster) {