Language Environment's runtime support for different compilers

The OS/VS COBOL runtime library provided support for only OS/VS COBOL programs. Assembler programs could be included, but not VS COBOL II programs.

The VS COBOL II runtime library provided support for both OS/VS COBOL and VS COBOL II programs. Assembler programs could also be included.

Language Environment® provides support for OS/VS COBOL programs, and VS COBOL II programs, as well as IBM® COBOL and Enterprise COBOL programs. In addition, Language Environment provides support for other high-level languages, including PL/I, C/C++ and Fortran. Like its predecessors, assembler programs can be included in applications that run under Language Environment

Different versions of Enterprise COBOL have different minimum release level requirements for Language Environment. For example, Enterprise COBOL for z/OS®, Version 4.2 required a minimum level of z/OS Version 1 Release 9; Enterprise COBOL for z/OS, Version 5.1 and 5.2 requires a minimum level of z/OS Version 1 Release 13; Enterprise COBOL for z/OS, Version 6.2 requires a minimum level of z/OS Version 2 Release 1.