Format 4: sort/merge file description entry
1 SD ? RECORD
2.1 ? CONTAINS ? CHARACTERS
2.1 ? CONTAINS TO ? CHARACTERS
2.1 %clause 1? DEPENDING? ON ? DATA
2.1 RECORD? IS
2.1 RECORDS? ARE
1 + ? BLOCK? CONTAINS? TO
2.1 CHARACTERS
2.1 RECORDS? LABEL
2.1 RECORD? IS
2.1 RECORDS? ARE
2.1 STANDARD
2.1 OMITTED
2.1 + ? VALUE OF + ? IS
2.1
2.1 ? LINAGE? IS
2.1
2.1
1? LINES
1 %clause 2? CODE-SET? IS .