Values in operands

You can use a macro instruction operand to pass a value into the called macro definition. The two types of value you can pass are:

Explicit values or the actual character strings you specify in the operand
Implicit values, or the attributes inherent in the data represented by the explicit values

The explicit value specified in a macro instruction operand is a character string that can contain zero or more variable symbols.

The character string must not be greater than 1024 characters after substitution of values for any variable symbols. This includes a character string that constitutes a sublist.

The character string values in the operands, including sublist entries, are assigned to the corresponding parameters declared in the prototype statement of the called macro definition. A sublist entry is assigned to the corresponding subscripted parameter.