PNG (Portable Network Graphics)
PNG is a format used to transmit and store bitmapped images. It was created specifically for the Internet and other networks. It provides alpha transparency, high colour support, and slightly better compression than GIF. Older browsers do not support PNG. (see GIF & JPG)

Portal
Websites that serve as starting points to other destinations or activities on the Web. Portals commonly provide services such as e-mail, online chat forums, shopping, searching, content, newsfeeds, etc. (see Vertical Portal)

QuickTime
Developed by Apple Computer, QuickTime is a method of storing sound, graphics, and movie files. It has .mov file extension. Although QuickTime was originally developed for the Macintosh, player software is now available for Windows and other platforms.

RGB (Red Green Blue)
The three colors that create all other colors on a computer screen.

Raster Graphics
Raster-based graphics have become a standard technology and are popularly known by their GIF and JPEG formats. Raster graphics use pixel-by-pixel definitions as opposed to vector graphics which use computer algorithms to describe shapes, lines, animation, etc. (see GIF & JPG)

SHTML (Server-side include Hypertext Markup Language)
A Web file with the suffix of .shtml indicates a file that will include some information added "on the fly" by the server before being sent.

SGML (Standard Generalized Markup Language)
An international standard for the publication and delivery of electronic information.