diff --git a/system/dataset.py b/system/dataset.py
index d3dc22d..5823980 100644
--- a/system/dataset.py
+++ b/system/dataset.py
@@ -267,4 +267,4 @@ class Selection:
     """Handles selected identifiers along each dimension of a dataset"""
     def __init__(self):
         self.current_selection={}
-
+        
diff --git a/system/fluents.glade b/system/fluents.glade
index 4a98dd8..a62b5d8 100644
--- a/system/fluents.glade
+++ b/system/fluents.glade
@@ -622,8 +622,107 @@
 	      <child>
 		<widget class="GtkLabel" id="label1">
 		  <property name="visible">True</property>
-		  <property name="label" translatable="yes">Log</property>
-		  <property name="use_underline">False</property>
+		  <property name="label" translatable="yes">_Log</property>
+		  <property name="use_underline">True</property>
+		  <property name="use_markup">False</property>
+		  <property name="justify">GTK_JUSTIFY_LEFT</property>
+		  <property name="wrap">False</property>
+		  <property name="selectable">False</property>
+		  <property name="xalign">0.5</property>
+		  <property name="yalign">0.5</property>
+		  <property name="xpad">0</property>
+		  <property name="ypad">0</property>
+		  <property name="ellipsize">PANGO_ELLIPSIZE_NONE</property>
+		  <property name="width_chars">-1</property>
+		  <property name="single_line_mode">False</property>
+		  <property name="angle">0</property>
+		</widget>
+		<packing>
+		  <property name="type">tab</property>
+		</packing>
+	      </child>
+
+	      <child>
+		<widget class="GtkHPaned" id="hpaned4">
+		  <property name="visible">True</property>
+		  <property name="can_focus">True</property>
+		  <property name="position">400</property>
+
+		  <child>
+		    <widget class="GtkScrolledWindow" id="scrolledwindow6">
+		      <property name="visible">True</property>
+		      <property name="can_focus">True</property>
+		      <property name="hscrollbar_policy">GTK_POLICY_NEVER</property>
+		      <property name="vscrollbar_policy">GTK_POLICY_ALWAYS</property>
+		      <property name="shadow_type">GTK_SHADOW_NONE</property>
+		      <property name="window_placement">GTK_CORNER_TOP_LEFT</property>
+
+		      <child>
+			<widget class="GtkViewport" id="viewport1">
+			  <property name="visible">True</property>
+			  <property name="shadow_type">GTK_SHADOW_IN</property>
+
+			  <child>
+			    <widget class="Custom" id="selection_tree">
+			      <property name="visible">True</property>
+			      <property name="creation_function">create_selection_tree</property>
+			      <property name="int1">0</property>
+			      <property name="int2">0</property>
+			      <property name="last_modification_time">Fri, 04 Aug 2006 12:42:10 GMT</property>
+			    </widget>
+			  </child>
+			</widget>
+		      </child>
+		    </widget>
+		    <packing>
+		      <property name="shrink">True</property>
+		      <property name="resize">False</property>
+		    </packing>
+		  </child>
+
+		  <child>
+		    <widget class="GtkScrolledWindow" id="scrolledwindow7">
+		      <property name="visible">True</property>
+		      <property name="can_focus">True</property>
+		      <property name="hscrollbar_policy">GTK_POLICY_NEVER</property>
+		      <property name="vscrollbar_policy">GTK_POLICY_ALWAYS</property>
+		      <property name="shadow_type">GTK_SHADOW_NONE</property>
+		      <property name="window_placement">GTK_CORNER_TOP_LEFT</property>
+
+		      <child>
+			<widget class="GtkViewport" id="viewport2">
+			  <property name="visible">True</property>
+			  <property name="shadow_type">GTK_SHADOW_IN</property>
+
+			  <child>
+			    <widget class="Custom" id="identifier_list">
+			      <property name="visible">True</property>
+			      <property name="creation_function">create_identifier_list</property>
+			      <property name="int1">0</property>
+			      <property name="int2">0</property>
+			      <property name="last_modification_time">Fri, 04 Aug 2006 12:42:25 GMT</property>
+			    </widget>
+			  </child>
+			</widget>
+		      </child>
+		    </widget>
+		    <packing>
+		      <property name="shrink">True</property>
+		      <property name="resize">True</property>
+		    </packing>
+		  </child>
+		</widget>
+		<packing>
+		  <property name="tab_expand">False</property>
+		  <property name="tab_fill">True</property>
+		</packing>
+	      </child>
+
+	      <child>
+		<widget class="GtkLabel" id="label15">
+		  <property name="visible">True</property>
+		  <property name="label" translatable="yes">_Selections</property>
+		  <property name="use_underline">True</property>
 		  <property name="use_markup">False</property>
 		  <property name="justify">GTK_JUSTIFY_LEFT</property>
 		  <property name="wrap">False</property>
diff --git a/system/fluents.py b/system/fluents.py
index 7da59d2..39baab5 100755
--- a/system/fluents.py
+++ b/system/fluents.py
@@ -12,7 +12,7 @@ import gnome
 import gnome.ui
 import scipy
 import pango
-from system import project, workflow, dataset, logger, plots, navigator, dialogs
+from system import project, workflow, dataset, logger, plots, navigator, dialogs, selections
 
 
 PROGRAM_NAME = 'fluents'
@@ -31,6 +31,7 @@ class FluentApp:
         gtk.glade.set_custom_handler(self.custom_object_factory)
         self.widget_tree = gtk.glade.XML(GLADEFILENAME, 'appwindow')
         self.workflow = wf(self)
+        self['selection_tree'].set_identifier_list(self['identifier_list'])
 
     def init_gui(self):
         self['appwindow'].set_size_request(800, 600)
@@ -69,6 +70,7 @@ class FluentApp:
         self.project = project
         self.workflow.add_project(self.project)
         self.navigator_view.add_project(self.project)
+        self['selection_tree'].set_project(self.project)
 
     def set_workflow(self, workflow):
         self.workflow = workflow
@@ -130,6 +132,16 @@ class FluentApp:
         self.navigator_view.show()
         return self.navigator_view
 
+    def create_selection_tree(self, str1, str2, int1, int2):
+        self.selection_tree = selections.SelectionTree()
+        self.selection_tree.show()
+        return self.selection_tree
+
+    def create_identifier_list(self, str1, str2, int1, int2):
+        self.identifier_list = selections.IdentifierList()
+        self.identifier_list.show()
+        return self.identifier_list
+
     # Event handlers.
     # These methods are called by the gtk framework in response to events and
     # should not be called directly.
diff --git a/system/navigator.py b/system/navigator.py
index 74bdc61..959d09d 100644
--- a/system/navigator.py
+++ b/system/navigator.py
@@ -134,3 +134,4 @@ class NavigatorView (gtk.TreeView):
         else:
             t = type(obj)
             logger.log('debug', 'Activated datatype was %s. Don\'t know what to do.' % t)
+
diff --git a/system/project.py b/system/project.py
index c2dfcd4..2d707b4 100644
--- a/system/project.py
+++ b/system/project.py
@@ -6,26 +6,40 @@ from system import dataset, plots
 
 class Project:
     def __init__(self,name="Testing"):
-        self.data_tree = gtk.TreeStore(gobject.TYPE_STRING, 
-                                       gobject.TYPE_STRING, 
-                                       gobject.TYPE_PYOBJECT,gobject.TYPE_STRING,gobject.TYPE_STRING, gobject.TYPE_DOUBLE)
+        self.data_tree = gtk.TreeStore(gobject.TYPE_STRING, gobject.TYPE_STRING, 
+                                       gobject.TYPE_PYOBJECT, gobject.TYPE_STRING,
+                                       gobject.TYPE_STRING, gobject.TYPE_DOUBLE)
 
         self.name = name
         self.dim_names = []
         self._selection_observers = []
+        self._dataset_observers = []
         self.current_data = []
         self.datasets = []
         self.sel_obj = dataset.Selection()
         
-    def notify_selection_listeners(self):
+    def add_selection_observer(self, observer):
+        self._selection_observers.append(observer)
+        observer.selection_changed(self.get_selection())
+
+    def notify_selection_listeners(self, dim_name):
         """Notifies observers"""
         for observer in self._selection_observers:
             observer.selection_changed(self.get_selection())
 
-    def set_selection(self,dim_name,selection):
+    def add_dataset_observer(self, observer):
+        self._dataset_observers.append(observer)
+        observer.dataset_changed()
+
+    def notify_dataset_listeners(self):
+        """Notifies observers when new datasets are added"""
+        for observer in self._dataset_observers:
+            observer.dataset_changed()
+        
+    def set_selection(self, dim_name, selection):
         """Sets a current selection and notify observers"""
         self.sel_obj.current_selection[dim_name] = set(selection)
-        self.notify_selection_listeners()
+        self.notify_selection_listeners(dim_name)
 
     def get_selection(self):
         """Returns the current selection object"""
@@ -79,6 +93,7 @@ class Project:
             if dim_name not in self.dim_names:
                 self.dim_names.append(dim_name)
                 self.sel_obj.current_selection[dim_name] = set()
+        self.notify_dataset_listeners()
 
         
     def object_at(self, path):
diff --git a/workflows/test_workflow.py b/workflows/test_workflow.py
index 616bce7..1293fc2 100644
--- a/workflows/test_workflow.py
+++ b/workflows/test_workflow.py
@@ -110,8 +110,10 @@ class TestDataFunction(workflow.Function):
                 graph.add_edge(x, y, 3)
         ds = dataset.GraphDataset(array(networkx.adj_matrix(graph)))
         ds_plot = plots.NetworkPlot(ds)
+        print ds.get_dim_name()
             
-        return [X, ds, plots.SinePlot(), p, ds_plot]
+        ds_scatter = plots.ScatterPlot(ds, ds, 'rows_0', 'rows_0', '0_1', '0_2')
+        return [X, ds, plots.SinePlot(), p, ds_plot, ds_scatter]
 
 class DatasetLog(workflow.Function):
     def __init__(self):