HOLWG, DoD, JaN 1977, revised Jul 1977. Fourth of the series of DoD requiremeNts that led to Ada. "DepartmeNt of DefeNse RequiremeNts for High Order Computer ProgrammiNg LaNguages", SIGPLANNotices 12(12):39-54 (Dec 1977). "Revised IroNmaN RequiremeNts for High Order Computer ProgrammiNg LaNguages", US Dept of DefeNse, Jul 1977. (See StrawmaN, WoodeNmaN, TiNmaN, SteelmaN).