TABLE OF CONTENTS Level: 2
Definition: A characteristic of the digital transmission of radio frequency (RF) signals where there is a drastic change in reception quality resulting from a small change in reception power. By comparison, when an analog RF signal approaches the limits of acceptable reception power the television picture begins to experience gradual degradation with increasing sparkles or snow. (See also DTV.)
Level: 1
Definition: A temporary memory area used by computers that enables the cutting and pasting of information from one place in a document to another place in that document or to another document or program. When users select a portion of their document and select Cut, the information is transferred to the clipboard. When they position the insertion point where they want the information to end up, they can paste the information from the clipboard to that specific location. In Microsoft Windows and the Apple Macintosh operating system, the Clipboard can also be used to copy information from one application to another.
Level: 2
Definition: A process by which a web site can display different pages under different circumstances, cloaking is sometimes used to show an optimized page to search engines and a different page to humans. Most search engine companies will refuse to index a site if they discover that it is attempting to use cloaking. Cloaking uses serverside technology that delivers different web pages depending on whether the IP address is from a known search engine...
