Outputs
The output fields for the II_GET operation describe the results the DBMS Server returns. The outputs are as follows:
pop_cb
A pointer to the peripheral operations control block, II_POP_CB (for calling).
pop_segment->db_data
The DBMS Server fills this field with the next segment.
pop_user_arg
The DBMS Server fills this field, if appropriate.
pop_error
The DBMS Server fills this field with the error value, if there is any.