A language, BLISS, is described. This language is designed so as to be especially suitable for use in writing production software systems for a speci c machine (the PDP-10): compilers, operating systems, etc. Prime design goals of the design are the abilitytoproduce highly ecient object code, to allow access to all relevant hardware features of the host machine, and to provide a rational means by which to cope with the evolutionary nature of systems programs.
