/SPM_PROCESS_ID=(process-id[,...])

    Merges the specified SPM data files. Each process-id parameter
    must be a valid OpenVMS process identification number, specified
    as a hexadecimal number. You may omit the leading zeros. Each
    collection of PC data is assigned a RUN_NAME identifier of
    the form SPM_n, where n is the OpenVMS process identification
    number that you specify in the process-id list. The data must be
    collected for the image of the currently open data file. A list
    of more than one number must be enclosed in parentheses. If you
    omit this qualifier, the Analyzer assumes that all of the files
    are PCA performance files.