Position 22 (External Description)
Position 22 (External Description)
| Free-Form Syntax | For data structures, specify the EXT keyword or the EXTNAME keyword as the first keyword. For subfields, use the EXTFLD keyword as the first keyword. |
This position is used to identify a data structure or data-structure subfield as externally described. If a data structure or subfield is not being defined on this specification, then this field must be left blank.
Entry : Explanation for Data Structures
E : Identifies a data structure as externally described: subfield definitions are defined externally. If the EXTNAME keyword is not specified, positions 7-21 must contain the name of the externally described file containing the data structure definition.
Blank : Program described: subfield definitions for this data structure follow this specification.
Entry : Explanation for Subfields
E : Identifies a data-structure subfield as externally described. The specification of an externally described subfield is necessary only when keywords such as EXTFLD and INZ are used.
Blank : Program described: the data-structure subfield is defined on this specification line.