+frame .ctrl
+pack .ctrl -side right
+
+panner::canvas-scroll-bbox .f.c
+panner::create .ctrl.pan .f.c 200 200
+
+pack .ctrl.pan -side top -pady 20 -padx 20
+frame .ctrl.zoom
+pack .ctrl.zoom -side top
+
+button .ctrl.zoom.out -text - -font {Courier 16}
+button .ctrl.zoom.in -text + -font {Courier 16}
+pack .ctrl.zoom.out .ctrl.zoom.in -side left
+
+#. configure -width 640 -height 480
+wm geometry . 1024x480
+