*ALL is optional. If *ALL is specified and the name operand is a multiple occurrence data structure or a table name, all occurrences or table elements are cleared and the occurrence level or table index is set to 1.
The name operand specifies the variable to be cleared. The particular entry in the name operand determines the clear action as follows:
Single occurrence data structure
All fields are cleared in the order in which they are declared within the structure.
Multiple-occurrence data structure
If *ALL is not specified, all fields in the current occurrence are cleared. If *ALL is specified, all fields in all occurrences are cleared.
Table name
If *ALL is not specified, the current table element is cleared. If *ALL is specified, all table elements are cleared.