If you are using docked windows, you can have them available for use but kept minimized or hidden until you actually need to use them. The windows are represented by tabs in the top, bottom, left or right margins of the work area.
When you move the cursor over the tab, the window displays and you can work within it. As soon as you move the cursor out of the window, it automatically contracts into the margin tab again. This means that you have the maximum work area for performing your main task, with the convenience of still being able to immediately use any of a wide range of other windows.
If you have 'hidden' a tabbed frame of docked windows, the 'open' hidden window is represented by the tab, whilst the others are indicated by an icon. In the illustration, the Project Browser is the open hidden window in the frame containing (continuing downwards) the Tagged Values window, Package Browser and Model Views window. You move the cursor over an icon to expand both the tab and the associated window.
Autohide a Window or Set of Windows