PawPrint.net Glossary of Terms

A simple, very flexible text format derived from SGML (ISO 8879). Originally designed to meet the challenges of large-scale electronic publishing, XML is also playing an increasingly important role in the exchange of a wide variety of data on the Web and elsewhere.

The Set of rules to provide system management tools to monitor activity and create messages/alerts as required. Network devices that employ SNMP are frequently referred to as "Managed" devices.

A Page Description Language (PDL) developed by Adobe Systems. PostScript is primarily a language for printing documents on laser printers, but it can be adapted to produce images on other types of devices. PostScript is the standard for desktop publishing because it is supported by imagesetters, the very high-resolution printers used by service bureaus to produce camera-ready copy.

PostScript is an object-oriented language, meaning that it treats images, including fonts, as collections of ge...

A set of rules used to define how email should be sent and governing communication between mail servers to achieve this end.

The opening of a lens that admits light. Except in very simple cameras, the Aperture can be varied in size by an adjustable  diaphragm, which regulates the amount of light passing through the lens. The relative Aperture is measured as the focal length of the lens divided by the diameter of the Aperture; this is expressed as an f-number: f/3, f/5, and so on.

Aperature has a dramatic effect on the Depth-of-field of the photograph.

A measure of image resolution - typical screen resolution is 72 dip whereas printing presse print at 300dpi.

When measuring the resolution of an image you need to know both the physical size and the resolution (in DPI) to acertain the actual amount of data. For example:

An image that is 10 inches wide...

at 72dpi would be 720 pixels wide
at 300dpi would be 3000 pixels wide (roughly 3.5 times the resolution)