Externally Described Data Structure Subfield Keywords

• ALT(array_name)
• ALTSEQ(*NONE)
• ASCEND
• CTDATA
• DESCEND
• DIM({*AUTO:|*CTDATA|*VAR:}numeric_constant)
• EXTFLD{(field_name)}
• EXTFMT(code)
• FROMFILE(file_name)
• INZ{(initial value)}
• LEN(length)
• PERRCD(numeric_constant)
• TOFILE(file_name)