VARIABLE /INDEX

        [MRTCAL\]VARIABLE /INDEX

    Populate  the  MDX%HEAD%  Sic  structure with all the current index sec-
    tions. Components are:
      - MDX%HEAD%KEY
      - MDX%HEAD%PRI
      - MDX%HEAD%SCI
      - MDX%HEAD%POI
    Each individual component is appended a "number of entries"  (i.e.  size
    MFOUND)  trailing  dimension compared to the MHEAD% equivalent structure
    for one entry.