ALL

       Specifies that you want to modify either all records in the
       CURRENT collection or all records in the record stream specified
       in the record selection expression (rse).

    field-name

       Specifies the name of a field in the target records you want to
       modify. If you specify more than one field name, use a comma to
       separate each field name from the next. DEC DATATRIEVE prompts
       you to supply a value for each field you specify.

    USING statement-1

       Specifies a simple or compound DEC DATATRIEVE statement that
       assigns values to one or more fields in the target records
       you want to modify. This clause can also contain any other DEC
       DATATRIEVE statements, such as PRINT, STORE, and other MODIFY
       statements.

    VERIFY [USING] statement-2

       Specifies a statement that DEC DATATRIEVE executes before
       modifying the target record.

    OF rse

       Is a record selection expression that forms a record stream of
       the records you want to modify. An OF rse clause is optional in
       format 1 of the MODIFY statement. In format 2, an rse without OF
       is required.