diff --git a/coretk/coretk/data/icons/markerclear.png b/coretk/coretk/data/icons/markerclear.png
new file mode 100644
index 00000000..6f58c005
Binary files /dev/null and b/coretk/coretk/data/icons/markerclear.png differ
diff --git a/coretk/coretk/dialogs/marker.py b/coretk/coretk/dialogs/marker.py
index feb8bd09..5648a89b 100644
--- a/coretk/coretk/dialogs/marker.py
+++ b/coretk/coretk/dialogs/marker.py
@@ -24,10 +24,14 @@ class Marker(Dialog):
 
     def draw(self):
         button = ttk.Button(self.top, text="clear", command=self.clear_marker)
-        button.grid(row=0, column=0)
+        button.grid(row=0, column=0, sticky="nsew")
 
         frame = ttk.Frame(self.top)
-        frame.grid(row=1, column=0)
+        frame.columnconfigure(0, weight=1)
+        frame.columnconfigure(1, weight=4)
+        frame.grid(row=1, column=0, sticky="nsew")
+        label = ttk.Label(frame, text="Thickness: ")
+        label.grid(row=0, column=0, sticky="nsew")
         combobox = ttk.Combobox(
             frame,
             textvariable=self.marker_thickness,
@@ -36,8 +40,14 @@ class Marker(Dialog):
         )
         combobox.grid(row=0, column=1, sticky="nsew")
         combobox.bind("<<ComboboxSelected>>", self.change_thickness)
-        label = ttk.Label(self.top, background=self.color)
-        label.grid(row=2, column=0, sticky="nsew")
+        frame = ttk.Frame(self.top)
+        frame.columnconfigure(0, weight=1)
+        frame.columnconfigure(1, weight=4)
+        frame.grid(row=2, column=0, sticky="nsew")
+        label = ttk.Label(frame, text="Color: ")
+        label.grid(row=0, column=0, sticky="nsew")
+        label = ttk.Label(frame, background=self.color)
+        label.grid(row=0, column=1, sticky="nsew")
         label.bind("<Button-1>", self.change_color)
 
     def clear_marker(self):
@@ -57,3 +67,7 @@ class Marker(Dialog):
     def close_marker(self, event):
         logging.debug("destroy marker dialog")
         self.app.toolbar.marker_tool = None
+
+    def position(self):
+        print(self.winfo_width(), self.winfo_height())
+        self.geometry("+{}+{}".format(self.app.master.winfo_x, self.app.master.winfo_y))
diff --git a/coretk/coretk/graph/graph.py b/coretk/coretk/graph/graph.py
index e0878f20..996c85eb 100644
--- a/coretk/coretk/graph/graph.py
+++ b/coretk/coretk/graph/graph.py
@@ -499,7 +499,7 @@ class CanvasGraph(tk.Canvas):
             x, y = self.coords(selected)
             self.drawing_edge = CanvasEdge(x, y, x, y, selected, self)
 
-        if self.mode == GraphMode.ANNOTATION and selected is None:
+        if self.mode == GraphMode.ANNOTATION:
             if is_marker(self.annotation_type):
                 r = self.app.toolbar.marker_tool.radius
                 self.create_oval(
@@ -511,7 +511,8 @@ class CanvasGraph(tk.Canvas):
                     outline="",
                     tags="marker",
                 )
-            else:
+                return
+            if selected is None:
                 shape = Shape(self.app, self, self.annotation_type, x, y)
                 self.selected = shape.id
                 self.shape_drawing = True
@@ -587,8 +588,7 @@ class CanvasGraph(tk.Canvas):
                 shape = self.shapes[self.selected]
                 shape.shape_motion(x, y)
             elif is_marker(self.annotation_type):
-                marker_tool = self.app.toolbar.marker_tool
-                r = marker_tool.radius
+                r = self.app.toolbar.marker_tool.radius
                 self.create_oval(
                     x - r,
                     y - r,
@@ -598,6 +598,7 @@ class CanvasGraph(tk.Canvas):
                     outline="",
                     tags="marker",
                 )
+            return
 
         if self.mode == GraphMode.EDGE:
             return
diff --git a/coretk/coretk/toolbar.py b/coretk/coretk/toolbar.py
index 0769380a..c32b0d75 100644
--- a/coretk/coretk/toolbar.py
+++ b/coretk/coretk/toolbar.py
@@ -420,6 +420,7 @@ class Toolbar(ttk.Frame):
         logging.debug("Click on marker button")
         dialog = Marker(self.master, self.app)
         dialog.show()
+        # dialog.position()
 
     def click_two_node_button(self):
         logging.debug("Click TWONODE button")