This is the Jargon File, a comprehensive compendium of hacker slang illuminating many aspects of hackish tradition, folklore, and humor. - The Jargon File, version 2.9.9 This document is a collection of slang terms used by various subcultures of computer hackers. Though some technical material is included for background and flavor, it is not a technical dictionary; what we describe here is the language hackers use among themselves for fun, social communication, and technical debate. - The Jargon File, version 2.9.9 The Revision History section which provides historical background is contained within the document itself. While edition 1.0.3 contains only about 500 lines, edition 4.4.7 is over 37000 lines long.