>"Forth is a text-based language that is essentially context-free. It combines 'words' separated by spaces, to construct new words. About 150 such words constit

>"Forth is a text-based language that is essentially context-free. It combines 'words' separated by spaces, to construct new words. About 150 such words constitute a system... [...] Such a system has 3-8K bytes of code compiled from 10-20 pages of source. It can easily be implemented by a single programmer on a small computer. [...] Another application of least-squares was the program CURVE, coded in Algol (1964). It is a general-purpose non-linear differential-corrections data-fitting program. Its statistical rigor provides insight into agreement between model and data. The data format and model equations were interpreted and a push-down stack used to facilitate evaluation. CURVE was an impressive precursor to Forth."