ALT Text (Alternative Text): In earlier years of the Internet, alternative text was particularly helpful to people using text-only browsers. It is also very useful to people who are accessibly challenged e.g. the blind. Special equipment can read the text in place of images when images are tagged properly.

The most common reason for the use of ALT Text these days is search engine optimization. Search engines are able to read the ALT Text of an image and rank the individual images in pages according to the keywords within the ALT Text tag.

DHTML (Dynamic Hypertext Markup Language): Is a mixture of technologies are used together to create interactive and animated websites.A combination of a static markup language (such as HTML), a client-side scripting language (such as JavaScript), a presentation definition language ( Cascading Style Sheets, CSS), and the Document Object Model.

An exaple of DHTML at work is a banner on a web site that chsnges each time a page loads.

GUI (Graphical User Interface): Is a visual representation of functional code. Or, is a way for the average web user to interface with a database, program, etc. Frontpage is an example of a program that writes code or HTML while the end user works with plain text and images.

PR (Page Rank): Google technology developed at Stanford University for placing importance on pages and web sites. At one point, PageRank (PR) was a major factor in rankings. Today it is one of hundreds of factors in the algorithm that determines a page’s rankings.

TLP (Top Level Page): This is usually the home page, main category pages, or product pages that have a unique value for the site and so are structured in the top levels of the site directory.