was originally introduced in the Plus! 98 collection for Windows 98, but is included in the base operating system in Windows Me. A new Help and Support program has also been added, replacing the HTML Help-based documentation in Windows 2000 and Windows 98. The Help and Support Center is entirely HTML-based and takes advantage of a technology called Support Automation Framework (SAF), that can show support information from the internet, allows collecting data for troubleshooting via WMI and scripting and for third parties to plug into Windows Help and Support. Several other support tools also shipped with Windows Me. Windows Me also includes Internet Explorer 5.5, which supports a new Print Preview feature. It also shipped with the MSN Messenger Service. Accessibility features On-Screen Keyboard: Originally introduced with Windows 2000, On-Screen Keyboard makes it possible to input characters using the mouse instead of the keyboard. The Mouse Control Panel incorporates IntelliPoint features, namely ClickLock (selecting or dragging without continuously holding down the mouse button), hiding the pointer while typing, and showing it by pressing Ctrl. The cursor (system caret) can be set to a thicker width. Increased Active Accessibility support in utilities such as Calculator and Magnifier. Removed features Real mode DOS Windows Me restricted support for real mode MS-DOS. As a result, IO.SYS in Windows Me disregards CONFIG.SYS, COMMAND.COM and WIN.COM and directly executes VMM32.VXD. In its default configuration the system would neither boot into an MS-DOS command prompt nor exit to DOS from Windows; real mode drivers such as ANSI.SYS could not be loaded and older applications that require real mode could not be run. Microsoft argued that the change improved the speed and reliability of the boot process. In Windows Me, the CONFIG.SYS and AUTOEXEC.BAT files are used only to set global environment variables. The two files (if present) are scanned for settings relating to the environment variables, and any other commands present are moved into a Windows registry key (see below). The two files thus contain only settings and preferences which configure the "global environment" for the computer during the boot phase or when starting a new virtual DOS machine (VDM). To specify or edit other startup values (which, in Windows 98, would be present in the AUTOEXEC.BAT file) the user must edit the following Windows registry key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SessionManager\Environment For troubleshooting and crash recovery, both the Windows Me CD-ROM and the Windows Me startup disk (a