File psl-1983/3-1/util/rawbreak.red from the latest check-in
% RAWBREAK.RED - A safer break loop if RAWIO is loaded % MLG 16 Jan 1983 FLUID '(!*RAWIO); CopyD('OldBreak,'break); procedure newbreak(); Begin scalar OldRaw,x; OldRaw :=!*RawIo; If OldRaw then EchoOn(); x:=OldBreak(); If OldRaw Then EchoOff(); return x; End; Copyd('break,'newbreak); flag('break,'lose);