Drag: To press and hold the left button of the mouse over an object, then move the mouse. Moves the selected object.

Driver: The software that controls a device.

Dual-boot configuration: Having more than one operating system installed and accessible on a computer.

Effective permissions: What a user actually has access to, according to the rules that govern overlapping permissions.

Enterprise network: A WAN owned and managed by one organization or company.

Extended partition: A division of a hard drive that can contain multiple drives, called logical drives.

File: An electronic document, picture, or other item created on the computer; a collection of bytes stored as an individual entity. All data on disk are stored as a file with an assigned filename that is unique within the folder it resides in.

File naming conventions: Naming rules for files.

File system: A method of organizing files on a computer.

FilterKeys: Option that prevents users from accidentally pressing the same key multiple times.

Firewall: Hardware or software that inspects traffic between an internal network and the outside world; its function is to block some traffic and allow other traffic through.

First line indent: How far from the left indent to position the first line of a paragraph.

Floppy disk drive: Allows users to save information to and retrieve information from 3.5-inch floppy disks.

Font: A style of type, a set of letter characters designed to look a specific way.

Footer: Text printed along the bottom of each page.

Format (disk): To set up a disk so that it can store information; the way information is structured on a disk.

Frame: A container for part of a Web page.

Full justified: Text is aligned so that the left and right edges are flush with the margins.

Group: A collection of user accounts.

Hard drive: The storage space that is built into the computer.

Hardware Compatibility List: List of hardware that is compatible with Windows XP Professional. Available from the CD-ROM and the Microsoft Web site.

Header: Text printed at the top of every page.

Help and Support Center: Displayed from the Start menu. Provides assistance to users and access to online data sources.

Home page: The first page that displays when users open Internet Explorer or navigate to a Web site.