Selection and Move modes

You can use the mouse to select items or move the display, depending on which mouse mode you've selected. In Move mode, click-dragging on the main data display moves it from side to side, or up and down. In Selection mode, clicking or click-dragging on the display selects items, allowing you to find out more information about them, run Google searches, and more.

...

To change to Move mode, click the Move tool.

Shortcut

To temporarily switch between mouse modes, click and hold the ALT button.  When you release the mouse button, you'll return to the currently selected mouse mode.