Control language elements

Control language (CL) contains elements such as character sets and values, expressions, built-in functions, and naming within commands.

CL character sets and values
The EBCDIC character sets, special characters, and IBM-defined fixed values called predefined values can be used in CL.
Expressions in CL commands
A character string expression can be used for any parameter, element, or qualifier that is defined with EXPR(*YES) in the command definition object.
Built-in functions for CL
Control language (CL) provides several built-in functions. Built-in functions are used in arithmetic, character string, relational, or logical expressions. All of these built-in functions can only be used in compiled CL programs or procedures.
Naming within commands
The type of name you specify in control language (CL) determines the characters you can use to specify a name.

Parent topic: CL concepts