Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

Case sensitivity

You can use a combination of lowercase and uppercase characters in a PL/I program.

When used in keywords or identifiers, the lowercase characters are treated as the corresponding uppercase characters. This is true even if you entered a lowercase character as a DBCS character.

When used in a comment or in a character, mixed, or a graphic string constant, lowercase characters remain lowercase.


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