'World Wide Web'

A system of Internet servers that support specially formatted documents. The documents are formatted in a script called HTML (HyperText Markup Language) that supports links to other documents, as well as graphics, audio, and video files. This means you can jump from one document to another simply by clicking on hot spots. Not all Internet servers are part of the World Wide Web.

'Clicking'

Clicking a mouse button while holding the Shift key down. In Microsoft Windows and Macintosh systems, shift clicking enables you to select multiple items. Normally, on the Net, when you select an item, the system deselects the previously selected item. However, if you shift click an item, the previously selected item(s) remain selected. Laptops differ.