## Edit of a figure

It is possible to edit the form of the figure already created. The following operation is performed in order to edit a figure.

1. < Test > icon A ‚ð click is carried out and it goes into the test mode.
2. The target figure is chosen with a mouse.
   As for the selected figure, a resizing knob (mark of a small black square) is displayed.
3. A resizing knob is dragged with a mouse and the form of a figure is changed.

The vertex will be deleted if a resizing knob is clicked with a mouse in the case of a polygon, pushing [Ctrl] key. Moreover, a new vertex will be created by the position if a polygonal neighborhood top is clicked, pushing [Ctrl] key.