ABC ALGOL is an extension of the Algol 60 programming language with arbitrary data structures and user-defined operators, targeted for symbolic mathematics. Despite its advances, it was never used as widely as Algol proper.

References

• "ABC ALGOL, A Portable Language for Formula Manipulation Systems", R.P. van de Riet, Amsterdam Math Centrum 1973
• This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.

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Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "ABC ALGOL"