Document Selector command (View menu)
Use this command to display and hide the Document Selector, which offers quick access to all open documents. Switching between documents is much easier with clicking document selector than pressing Ctrl+Tab key multiple times. A check mark appears next to the menu item when the Document selector is displayed.

To change the location of the Document Selector, right click the Document Selector and choose 'Options' command on the popup menu.

See Document Selector for help on using the Document Selector.

Shortcuts
Toolbar:    
Keys:    Alt+Shift+3