Wondering what a JPEG is? Confused over the meaning of bit mode? Jargonary, a new Mac OS X dictionary, can help. It lets you look up computer jargons in a definition database that's stored on your computer. The database contains explanations for over 13,000 computer terms. Jargonary also provides real-time searching; a history feature for retracing your search results; an auxiliary definition feature that helps define words within definitions; and a "closest match" feature for quick browsing. [MacCentral]