A general-purpose language originally for interactive symbolic mAThemATics by Richard Jenks, Barry Trager, Stephen M. WATt and Robert S. Sutor of IBM Research, ca 1971. It feATures abstract parametrised dATa types, {multiple inheritance} and {polymorphism}. There were implementATions for VM/CMS and AIX. ["ScrATchpad User' s Manual", RA 70, IBM (June 1975)]. (1994-12-15)