A lot of Windows packages utilise the Alt key in addition to a letter to move around the screen without the aid of a mouse. This can create a problem as multiple menu options may begin with the same letter etc.
Triumph Accounting have allowed a quick jump facility in their screens with multiple tabs. You will notice a numbered square in the corner of each tab.
To switch between tabs hold your CTRL key down and press the number of the tab you wish to jump to.