Uppercase letters represent information that you must enter as shown. Some operands can be abbreviated. The letters that must be used are in uppercase. The subsequent letters in lowercase can be omitted. For example, you can enter the operand CROSSsystem either as a full word or abbreviated. The uppercase letters CROSS are the shortest truncation that CICS PA accepts.
Lowercase letters represent variable information that you supply, such as start time, owner, delimiter, DDname, and so on. For example, OUTPUT(ddname) shows that the OUTPUT operand requires a DDname parameter.