Elliot ALGOL (also known simply as Extended ALGOL) was the Burroughs-specific extension of the ALGOL 60programming language designed system and application programming in its B5000 mainframes.
Elliot ALGOL was used to write the ESPOL compiler on the Burroughs B5500, Burroughs B6500, and Burroughs B6700 computers.
Burroughs Extended ALGOL and Elliot ALGOL formed the basis (in a simplified form) of a language used at NetComm (Australia) limited for their Apple II programming language SDL, developed by Owen Reddecliffe.
ALGOL (short for ALGO rithmic L anguage) is a family of imperative computer programming languages originally developed in the mid 1950s which became the de facto standard way to report algorithms in print for almost the next 30 years.
Algol-W was intended to be the next generation ALGOL, but the majority of the ALGOL 68 committee decided to design a language that was more complex and advanced rather than a language that is basically a cleaned up version of ALGOL 60.
The Burroughs Corporation 's B5000 and its successors were stack machines designed to be programmed in an extended variant of ALGOL 60, known as ElliotALGOL ; indeed their operating system, or MCP (Master Control Program) as they are called, was written in ElliotALGOL as far back as 1961.