Glossary

ASP:: Active Server Pages
CGI:: Common Gateway Interface
DEM:: Digital Elevation Model. A digital representation of a continuous variable over a two-dimensional surface by a regular array of z values referenced to a common datum. Digital elevation models are typically used to represent terrain relief. This is a common GIS product created at a variety of scales.
HTML:: HyperText Markup Language: A Hypertext document format used on the World-Wide Web. Built on top of SGML (Standard Generalized Markup Language).
JS:: Java Script: (Formerly LiveScript) Netscape's simple, cross-platform, World-Wide Web scripting language, only very vaguely related to Java. JavaScript is intimately tied to the World-Wide Web, and currently runs in only three environments - as a server-side scripting language, as an embedded language in server-parsed HTML, and as an embedded language run in browsers (The Free On-line Dictionary of Computing).
mainframe:: A term originally referring to the cabinet containing the central processor unit or "main frame" of a room-filling Stone Age batch machine. After the emergence of smaller "minicomputer" designs in the early 1970s, the traditional big iron machines were described as "mainframe computers" and eventually just as mainframes. The term carries the connotation of a machine designed for batch rather than interactive use, though possibly with an interactive time-sharing operating system retrofitted onto it; it is especially used of machines built by IBM, Unisys and the other great dinosaurs surviving from computing's Stone Age (The Free On-line Dictionary of Computing).
PHP:: Hypertext Preprocessor
SVG:: Scalable Vector Graphics
XML:: eXtendable Markup Language