Scanner
A peripheral for digitising documents (photos, slides, drawings, texts), though it can also digitise small objects. It is an essential tool for putting pictures on a personal web site.

Script
A set of commands written in an interpreted language to automate certain application tasks. The term scenario is also sometimes used.

Server
A computer or software providing services to remote client machines or applications, such as supplying page contents (texts or other resources) or returning query results.

Servlet
A server-side Java program that provides additional features to the server.

SET
Secure Electronic Transaction. Technology developed by Visa and Mastercard to secure online payments.

SGML
Standard Generalised Markup Language. Language for describing the structure of a document. HTML is derived from SGML.

Shockwave
Software developed by Macromedia to create and distribute multimedia animations on the Web. To support Shockwave files, a browser needs the appropriate plug-in (available free of cost). Flash is its successor.

Silhouetting
A technique used to select all or part of an image in order to include it in another image or document.

Site Submission
All the techniques involved when submitting a site to search engines or directories.

Source Code
All the tags and instructions contained in a text file used to compose a Web page.

SQL
Structured Query Language. Relational database query language developed by IBM. It is compatible with HTML and XML.

SQL Server
Microsoft database management software.

SSL
Secure Sockets Layers. A protocol developed by Netscape for securing data sent by the browser by means of encryption.

Streaming
Technology that enables the playback of sound or video without the need to download the entire resource file in advance.

Submit Button
Transmits the data entered in a fill-in form to the processing program and resets the input fields.