/sys$common/syshlp/helplib.hlb SORT, Specification File Qualifiers, /OMIT, Example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  /FIELD=(NAME=ZIP,POSITION:20,SIZE:6)
  /CONDITION=(NAME=LOCATION,
              TEST=(ZIP EQ "01863"))
  /OMIT=(CONDITION=LOCATION)

      These /CONDITION and /OMIT qualifiers specify that records with
      the zip code 01863 are to be omitted from your output file.