An ALGOLSuperSet with high level inStructionS for low level actionS, e.g. interrupting another proceSSor on a multiproceSSor SyStem. ItSSingle paSS compiler waS very faSt: over 250 lineS/S on a 10MHz proceSSor. ESPOL waS uSed to write the MCP (MaSter Control Program) on the BurroughS 6700. It waSSuperSeded by NEWP. ["The B6700 ESPOL Reference Manual", BurroughS, 1970]. (2001-06-14)