songChoice = Observable(None) # to be connected with the session song

        def setSong():

            songChoice(graph.value(session, L9['currentSong']))

        graph.addHandler(setSong)

        # next here, watch songChoice and patch the graph

        ec = EditChoice(graph, songChoice, label="Editing song:")

        wtree.get_object("currentSongEditChoice").add(ec)

        ec.show()

        wtree.get_object("subterms").connect("add", self.onSubtermChildAdded)

        self.refreshCurveView()       

        self.makeStatusLines(wtree.get_object("status"))

        self.setupNewSubZone()

        self.acceptDragsOnCurveViews()

        # may not work

        wtree.get_object("paned1").set_position(600)

    def setupNewSubZone(self):

            flags=gtk.DEST_DEFAULT_ALL,

            targets=[('text/uri-list', 0, 0)],

            actions=gtk.gdk.ACTION_COPY)

    def acceptDragsOnCurveViews(self):

        w = self.wtree.get_object("curves")

        w.drag_dest_set(flags=gtk.DEST_DEFAULT_ALL,

                        targets=[('text/uri-list', 0, 0)],

                        actions=gtk.gdk.ACTION_COPY)

        def recv(widget, context, x, y, selection,

                       targetType, time):

            subUri = URIRef(selection.data.strip())

            print "into curves", subUri

            with self.graph.currentState(

                    tripleFilter=(subUri, RDFS.label, None)) as current:

                subName = current.label(subUri)

            try:

                self.makeSubterm(subName, withCurve=True,

                                 sub=subUri,

                                 expr="%s(t)" % subName)

            except SubtermExists:

                # we're not making sure the expression/etc are

                # correct-- user mihgt need to fix things

                pass

            curveView = self.curvesetView.row(subName).curveView

            t = self.lastSeenInputTime # curveView.current_time() # new curve hasn't heard the time yet. this has gotten too messy- everyone just needs to be able to reach the time source

            print "time", t

            curveView.add_points([(t - .5, 0),

                                  (t, 1)])

        w.connect("drag-data-received", recv)

    def onDragDataInNewSubZone(self, widget, context, x, y, selection,

                       targetType, time):

        data = URIRef(selection.data.strip())

        if '?' in data:

            self.handleSubtermDrop(data)

            return

    def handleSubtermDrop(self, data):

        params = parse_qsl(data.split('?')[1])

        flattened = dict(params)

        self.makeSubterm(Literal(flattened['subtermName']),

                         expr=flattened['subtermExpr'])

        for cmd, name in params:

            if cmd == 'curve':

                self.curveset.new_curve(name)

    def onNewCurve(self, *args):

        dialog = self.wtree.get_object("newCurve")

        entry = self.wtree.get_object("newCurveName")

        # if you don't have songx, that should be the suggested name

        entry.set_text("")

        if dialog.run() == 1:

            self.curveset.new_curve(entry.get_text())

        dialog.hide()

    def onSubtermsMap(self, *args):

        # if this was called too soon, like in __init__, the gtktable

        # would get its children but it wouldn't lay anything out that

        # I can see, and I'm not sure why. Waiting for map event is