RECFM=     {U  }
           {V  }
           {VS }
           {VBS}
           {F  }
           {FT }
 

U

indicates that the records are undefined length.

V

indicates that the records are variable length.

VS

indicates that the records are variable length and spanned.

VBS

indicates that the records are variable length, blocked, and spanned, and that the problem program must block and segment the records.

F

indicates that the records are fixed length.

T

indicates that the records may be written using the track-overflow feature.

Default: undefined-length, unblocked records.