Close All Windows

You can close all windows or all windows except the active window at once.

The function does not close the windows of a drawing-model pair, but minimizes them. You can close a drawing-model pair by opening another drawing-model pair or by closing the entire project.

Do either of the following:

Select View | Window| Close > Close All.
Activate the window you want to leave open and select View | Window | Close > Close Others.