Algol 68+, a superlanguage of Algol 68 for processing the standard-prelude
Lambert Meertens, J.C. vanVliet · Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands · 1981
In order to have an ALGOL 68 compiler process a version of the standard-prelude, it is necessary to define a superlanguage of ALGOL 68, ALGOL 68+, in which that version is written.The compiler must be able to accept programs (modules) written in ALGOL 68+.The present document gives a definition of ALGOL 68+, but only insofar as changes are needed to accommodate the standard-prelude itself (including the transput).