Archive for the ‘Glossary’ Category

File Under: Glossary


DeCSS is a software program that allows decryption of a CSS-encrypted movie and copying of the files to a hard disc (CSS stands for content scrambling system, and it’s used to protect the content of a DVD disc.) The DeCSS utility made online trading of DVD movies possible, although the interactive elements and outstanding audio/visual quality of DVD are compromised in the process.

File Under: Glossary


A web page is interactive when it prompts a response from the user.

Immediacy is the key to interactivity: If you click on a button that says “chat,” then that experience would be considered “more interactive” if you are immediately able to chat with someone online. The experience would be “less interactive” if the response was an email address for a mailing list on which you are allowed to discuss a particular issue. Interactive is really just another code word for describing how graphical elements in web pages work together with the software behind them.

File Under: Glossary


A font is the overall design for a set of characters. It describes the size, weight, and spacing of a character and shouldn’t be confused with a typeface, which is a more general term. Courier is a typeface; Courier 24-point bold is a font. Computers display fonts in either a bitmap or a vector format. In a bitmapped font, each character is represented by an arrangement of dots. In a vector font system, the shape or outline of each character is defined geometrically. Since a vector font is scalable according to the defined outline, a vector system can make many differently sized fonts from one defined set of characters. Currently, the most widely used vector font systems are PostScript and TrueType.
File Under: Glossary


The red, green, and blue (RGB) color system can represent a large portion of the color spectrum by mixing these three primary colors. Since cathode ray tube devices, such as computer monitors, display color with red, green, and blue light, this is the color system of the Web. There are 216 RGB colors that appear without dithering (i.e., without varying the pattern of dots in an image) in browsers for the PC and Macintosh platforms. (see Hexadecimal, Palette, CMYK)

File Under: Glossary


Extensible hypertext markup language is a hybrid between HTML 4.0 and XML. The main goal of XHTML is to provide a way for authors to update their HTML documents so that they are compliant with the XML standard, thus allowing them to be viewed with the next generation of XML browsers.