../code/conceptPage.scroll id s-snobol name S-Snobol appeared 1978 tags pl lab Heriot-Watt University supersetOf snobol4 country Scotland reference https://semanticscholar.org/paper/1ce78a711bc09611ce51b9dbcbc586a018115f09 hopl https://hopl.info/showlanguage.prx?exp=4041