Microprogramming and HLAs
Fixed operation

Exploring language family "PL-360s"

GPL    1974 PL-360s   Japan   Genken Programming Language 
PL-11    1971 PL-360s   Switzerland   CERN PDP-11 systems language 
PL360    1965 PL-360s   United States   Wirth's Algol 60-derived HLA for the 360 
PL516    1970 PL-360s   United Kingdom    
Plasyd    1965 PL-360s   United Kingdom   ICL systems language 
SPL    1972 PL-360s   United States   HP System Programming Language