1.CDO> DEFINE FIELD TRANS_DATE cont> DATATYPE IS DATE cont> EDIT_STRING IS NN"/"DD"/"YY. In this example, the DEFINE FIELD command creates the TRANS_ DATE field element, which displays as a series of three, two- digit numbers in a month/day/year format. 2.CDO> CHANGE FIELD TRANS_DATE cont> NOEDIT_STRING. CDO> CHANGE FIELD COBOL_TRANS_DATE cont> NOCOBOL EDIT_STRING. In this example, the NOEDIT_STRING keywords remove the generic EDIT_STRING property from the TRANS_DATE field element. The NOCOBOL EDIT_STRING keywords remove the COBOL-specific EDIT_ STRING property.