Unsupported PL/I language elements

The following list summarizes PL/I functions not available:

• Use of iSUB
• Interactive declaration or use of user-defined functions
• All preprocessor directives
• Multiple assignments
• BY NAME assignments
• LIKE attribute
• FILE, PICTURE, and ENTRY data attributes
• All I/O statements, including DISPLAY
• INIT attribute
• Structures with the built-in functions CSTG, CURRENTSTORAGE, and STORAGE
• The repetition factor is not supported for string constants
• GRAPHIC string constants are not supported for expressions involving other data types
• Declarations cannot be made as sub-commands (for example in a BEGIN, DO, or SELECT command group)