Specifications

Compilers, Interpreters, and Assemblers

7.15 PL/I

Digital offers two versions of PL/I: VAX PL/I for developing programs on

OpenVMS VAX and DEC PL/I for developing programs on OpenVMS AXP. They

both incorporate the following features:

• Compile-time preprocessor that allows language extension and conditional

compilation

• Several program control constructs (DO, IF-THEN-ELSE, BEGIN-END,

LEVEL, SELECT-WHEN-OTHERWISE, and CALL)

• AUTOMATIC initializations, AREA (user allocation), OFFSET, scalar

assignment to arrays, the REFER structure, the ENTRY statement, and the

TYPE and LIKE attributes

• Optional access to the CDD/Repository and to the Language-Sensitive Editor

component of LSE/SCA

• OpenVMS Debugger support

• Access to callable system routines

VAX

VAX PL/I also offers optional access to the Source Code Analyzer component of

LSE/SCA and the Program Design Facility.♦

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