ESPOL (short for Executive Systems Programming Oriented Language) was a superset of ALGOL 60 that provided capabilities of what would later be known as Mohols, machine oriented high order languages, such as interrupting a processor on a multiprocessor system (the Burroughs large systems were multiprocessor processor systems). It was used to write the MCP (Master Control Program) on the Burroughs B6700.
The single-pass compiler for ESPOL could compile over 250 lines per second.
ESPOL was superseded by NEWP.