From the Toolbar: Find the Rotate Tool icon on the View Toolbar  and Click on the tool. The tool is now active and ready for use.

 
From the Shortcut Key: The default shortcut key for the point tool is the letter " Shift + Number Pad - ". Simply press the key and the tool will be activated.

 
From the Command Line: Type "zoom_window" into the Command Line, at the top of the notification window, and press the Enter/Return key.

1.        Click and hold the left mouse button to start drawing the zoom rectangle.

2.        Move the mouse while still holding the left button down. This will display a temporary zoom rectangle. Release the left button when the rectangle is positioned as desired. The drawing will now update with the view focused on the specified area.

Reset:

After using this tool it automatically resets; you can choose a different tool or select another zoom window.

Escape (Esc): Cancels current tool and activates the default tool (Pan Tool).

Space: Resets this tool.