APLGOL-2 a structured programming language system for APL
Robert A. Kelley, J. R. Walters · 1974
APLGOL-2 works in conjunction with an APL system to provide structured programming facilities for APL. As a continuation of the original APLGOL work, it contains changes and additions to the APLGOL language. APLGOL procedures may exist in the same workspace as regular APL procedures, and they may be created or modified in the same way as regular APL procedures with approximately equivalent storage requirements and performance.