FORmula MAnipulation Compiler. J. Sammet & Tobey, IBM Boston APD, 1962. An extension of href="module.php?name=Lexikon&file=search&eid=1&query=Fortran">Fortran for {symbolic mathematics}. Versions: PL/I-FORMAC and FORMAC73. ["Introduction to FORMAC", J.E. Sammet et al, IEEE Trans Elec Comp (Aug 1964)]. [Sammet 1969, pp. 474-491].