Description: Returns the current value of an object in the job-info sub-tree whose value has changed. Define the object identifier for the object whose value has changed as job-info.required-field.optional-field.job-id. job-info represents the OID prefix of all objects in the job-info sub-tree. Required-field represents the OID field value that follows the job-info prefix. Since some objects in the job-info sub-tree have two OID fields between the job-info prefix and the job-id, the optional-field represents the OID field between the required-field and the job-id field, if present. Using this definition, the format for the JOB-INFO-CHANGE-ID binary value can be described as follows: Bytes 0-3 : required-field Bytes 4-7 : optional-field, or all zeros if there is no optional field Bytes 8-11: Job ID. Bytes 12-n : The value of the object job-info. required-field.optional-field.job-id. All multi-byte values stored in Motorola (big-endian) format, where the most significant byte occurs first. Additional information: LaserJet 5Si will use this object to report changes of the job-info-pages-printed and job-info-state objects. Therefore, the optional-field will always be zeroes and, because both of these are integers, the value portion of the data will always be four bytes.