### Is there the way to close previous plotting window when I input the second plotting command.

Hello.

The title is my question.

I am using SAGE in terminal of Mac OSX.

When I input the latter plotting command NEW plotting window opens.

For example,

```
sage: G=graphs.CompleteGraph(2)
sage: G.plot() <--------- the first window open
sage: G.add_vertex(3)
sage: G.plot() <--------- the second window open
```

I want to view only one plotting window.

How can I do?