Code identifying the functional area or purpose for which the note applies

To transmit large volumes of message text

To transmit large volumes of message text

A field to be used for the control of the line feed of the receiving printer

A generic number

MTX05 is the number of lines to advance before printing.

If MTX04 is "AA - Advance the specific number of lines before print", then MTX05 is required.

Code designating the language used in text, from a standard code list maintained by the International Standards Organization (ISO 639)