Copyright Goodheart-Willcox Co., Inc. 51 Chapter 2 Operating Systems Th ese characters have a special meaning to the operating system and will produce errors or unwanted results when used. As you can see in Figure 2-12, Windows dis- plays an error message when the user attempts to use a restricted character in the folder fi le name. Restricted characters also provide backward compatibility to legacy operating systems. Windows Desktop Th e Windows desktop has maintained a similar user interface from Windows XP to Windows 7 and even Windows 10. Th e lone exception was Windows 8, which used a tiled interface and did away with the popular Start menu. After much negative feedback from the Windows user base, the Start menu was reintroduced in a point release to Windows 8 called Windows 8.1. Th e Start menu located at the bottom-left corner of the desktop has remained relatively uniform since its introduction. From this menu, programs are launched, folders such as Documents and Pictures are accessed, and commands such as Shut Down are initiated. As mentioned, Windows 8 introduced a major change that incorporated a table-style interface totally diff erent from previous versions of Windows. Due to this change, Windows 8 does not support the Start menu feature. Windows 8.1 was a free upgrade from Windows 8. Th e default screen is named Start, as shown in Figure 2-13. Goodheart-Willcox Publisher Figure 2-12 An error message is displayed when a user enters a fi le name with a restricted character. Goodheart-Willcox Publisher Figure 2-13 Windows 8 introduced a new kind of Start menu featuring Tiles.