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	Dreamweaver A Macromedia software application that supports HTML as well as WYSIWYG editing, used to create and manage websites. Available for Macintosh computers and PC. See also Macromedia
	Descender That part of a lowercase letter that falls below the baseline, or x-height, of that letter. Examples of letters that have descenders are : ‘j’ ‘g’ ‘p’ ‘q’ ‘y’. See also Ascender, Baseline
	Disk Cache A temporary storage area on a computer to keep data available. Web browser software keeps a certain number of web pages that you've accessed in a cache so when you return to them they don't have to reload from over the Internet.
	DNS Domain Name System. A system that maps IP addresses into more meaningful strings of text called the domain. They take the form of a series of words separated by periods. The rightmost word is called the zone, specifying the nature of the organization or it's geographical location. Three letter zones denote organizations (eg - com for commercial organizations, edu for educational institutions, gov for government organizations, net for networks), while two letter zones denote geographical location (eg - ca for Canada).
	Domain Name The unique name that identifies an Internet site. The Internet is made up of hundreds of thousands of computers and networks, all with their own domain name or unique address. Domain names always have two or more parts separated by dots. A given server may have more than one domain name, but a given domain name points to only one server. For example, "whitehouse.gov" is the domain name belonging to the Whitehouse computer system. Once a system administrator registers a unique domain name, subaddresses can be assigned to the machines and people on the local network. So the President's e-mail address is "president@whitehouse.gov," the Vice-President's is "vice-president@whitehouse.gov," and so on. Each corresponds to a unique IP address. The machine that serves up the Whitehouse web pages is called www.whitehouse.gov. Domain names typically consist of some form of the organization's name and a suffix that describes the type of organization. For example, IBM has registered the domain name "ibm.com"; Xerox corporation has registered "xerox.com." Registration is on a first come, first served basis. The domain name suffix is assigned based on the type of organization. The main suffixes are: .com - business or commercial site .edu - educational institutions .org - non-profit organizations .mil - military organization .net - network provider .gov - government institution In addition, sites can have an extension that indicates the country where the domain is located. For example: .au - Australia .ca - Canada .dk - Denmark .ge - Germany .uk - United Kingdom .us - United States .za - South Africa The main domain names are assigned and indexed by the InterNIC project (a joint project of the National Science Foundation, AT&T, and Network Solutions, Inc.). Each of these addresses is actually an alias of a numerical address (called an IP address). The IP number for the Whitehouse for example, is 198.137.240.100. To access the Whitehouse Internet site, you could use the IP number if you like, but most people prefer to use the quasi-English domain name alias "whitehouse.gov." The first step toward getting yourself one of those "yournamehere.com" addresses is to find a name that isn't taken. Once you find a free name (there are plenty of companies out there that would love to help you in your search), then you have to register it with Internic, the organization that keeps track of which domain names correspond with what IP numbers (there's a US$70 registration fee). And that's not all. You have to keep on paying on an annual basis to keep that domain name yours (a $35 maintenance fee). All in all, it can be a fairly substantial investment in time and money. But if you plan on having your own little corner on the Web for years to come, then stake a claim now, because those names are going like hot cakes.
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