Universal files can be created by using a <U> attribute or both the NUMMAP=IRIS and CHARSET=IRIS options as part of the BUILD statement. For example, either of the following statements create Universal Contiguous files:

BUILD #1, "<U> [1:10] contfile"
BUILD #1, "(nummap=IRIS, charset=IRIS) [1:10] contfile"

In dL4 version 5 or later, the DL4DRIVERS environment variable or Windows registry entry can be used to make Universal files the default file format (DL4DRIVERS=Universal).