Said of a Capability of a programming language or hardware equipment that is available by its design without needing Cleverness to implement: "In APL, we get the matrix operations for free." "And owing to the way revisions are stored in this system, you get revision trees for free." The term usually refers to a serendipitous feature of doing things a Certain way (Compare big win), but it may refer to an intentional but seCondary feature. [Jargon File] (1994-12-14)