break-even point

	This is the JargonFile ^(V4.00) entry for break-even point - Next: breath-of-life packet, Prev: break
:break-even point: /n./ In the process of implementing a new computer language, the point at which the language is sufficiently effective that one can implement the language in itself. That is, for a new language called, hypothetically, FOOGOL, one has reached break-even when one can write a demonstration compiler for FOOGOL in FOOGOL, discard the original implementation language, and thereafter use working versions of FOOGOL to develop newer ones. This is an important milestone; see MFTL. Since this entry was first written, several correspondents have reported that there actually was a compiler for a tiny Algol-like language called Foogol floating around on various VAXen in the early and mid-1980s. A FOOGOL implementation is available at the Retrocomputing Museum http://www.ccil.org/retro.
* (text is auto-included via JargonExtension by mutante using jargon with VERSION 4.0.0, 24 JUL 1996* - JargonFile by Eric S. Raymond is in the public domain)*