If you make no further specifications beyond the essential array specifications, you have defined a run-time array. Note that the keywords ALT, CTDATA, EXTFMT, FROMFILE, PERRCD, and TOFILE cannot be used for a run-time array.
*...1....+....2....+....3....+....4....+....5....+....6....+....7...
DName+++++++++++ETDsFrom+++To/L+++IDc.Keywords+++++++++++++++++++++++++++
DARC S 3A DIM(12)