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aliasing: The jagged stair-stepped edges that can appear between colors in a bitmapped graphic.
anchor: The HTML element responsible for making hyperlinks.
applet: A self-contained, mini-executable program, such as one written in the Java programming language.
attribute: Parameters that extend or modify an HTML element

backend: Aspects of a web site that pertain to functions that take place on the server
bit depth: A measurement of colors based on the number of bits alloted by the file or system
browser: The client software that requests and displays web pages.

cache: Temporary storage area that browsers use for downloaded documents
CGI: Common Gateway Interface, a mechanism for communication between the web server and other programs running on the server
codec: An algorithm used by media files for compressing and decompressing data
compression: A method for reducing the file size of a document. Different file formats use different compression techniques

dithering: The approximation of a color by mixing pixels of similar colors that are available in the image or system palette.
Document Type Definition (DTD): An XML document that defines every element and attribute for a markup language.
domain name: A name that corresponds to a specific IP address.

extranet: A web site or system that is available within a closed system and to select users outside that system, usually via a password.

Flash: A multimedia format for the delivery of animation, interactivity, and audio on the Web
frame rate: In video and animation, the number of frames per second
FTP: File Transfer Protocol; a system for moving files over the Internet from one computer to another

gamma: Refers to the overall brightness of a computer's monitor display.
GIF: Graphic Interchange Format; common file format of web graphic images. GIF is a palette-based, 8-bit format.

hexadecimal: A base-16 numbering system that uses the characters 0-9 and A-F. It is used in CSS and HTML for specifying color values
host: Another term for the server. Hosting services are companies that provide server space for web sites.
HTML: HyperText Markup Language; the tagging language used to identify the structure of web documents.
HTTP: Hypertext Transfer Protocol; the system that defines how web pages and media are requested and transferred between servers and browsers.

imagemap: A single image that contains multiple hypertext links
IP address: A numeric identifier for a computer or device on a network.
ISP: Internet Service Provider; a company that sells access to the Internet computer network

Java: A cross-platform, object-oriented programming language developed by Sun Microsystems.
JavaScript: A scripting language that adds behaviors to elements on web pages and browsers.

lossy: A type of compression in which data is thrown out to reduce file size. The JPEG format uses a lossy compression scheme.

MP3: A popuplar file format for high-quality audio that uses MPEG compression
MPEG: A family of multimedia standards created by the Motion Picture Experts Group

nesting: Placing one HTML element within another. HTML and XHTML define rules for what elements may be nested within another.

palette: A table in an 8-bit indexed color file that provides color information for the pixels in the image.
pathname: Directions to a file using a nomenclature in which directory hierarchies and filenames are separated by slashes
pixel: A single square in a bitmapped graphic image
PNG: Portable Network Graphic; a graphic file format that features support for 8-bit and 24 bit images

QuickTime: An audio and video format developed by Apple Computer and available for all platforms

resolution: The number of pixels per inch (ppi) in a bitmapped image or computer monitor
RGB color: A color system that describes color based on combinations of red, green, and blue light
root directory: The top-level directory for a web site. The root directory contains all the files and subdirectories for a site.

sans-serif font: A font design featuring straight or squared off character strokes. Helvetica is an example.
serif font: A font that has horizontal slabs at the ends of character strokes. Times is an example

tweening: A function in animation tools for automatically creating frames between a start and end frame.

Unix: A multi-user, multi-tasking operating system developed by Bell Laboratories.
URL: Universal Resource Locator; the address of a document or resource on the World Wide Web

vector image: A graphic that uses mathematical equations to define shapes and fills. Vector images can be resized without change in quality.

W3C: The World Wide Web Consortium; a consortium of companies and organizations that develops common standards for the development of the Web. w3schools.com - Coach Arthur suggests this is the best resource for HTML, CSS, and JavaScript. HTML Tag Reference: w3schools.com/tags/default.asp
web palette: A set of 216 colors that is available on both Mac and Windows machines running 8-bit color monitors.

XHTML: The new HTML standard that has been written according to the rules of XML.
XML: eXtensible Markup Language; a metalanguage for creating custom markup languages