/GREY=setting
       /NOGREY (default)

    This qualifier controls the setting of the Grey Book flag. By
    default, this flag has value 0. When set to 1, /GREY=1, the Grey
    Book flag will be set on and addresses will be rewritten using
    the Grey Book format.

    This flag is used to force rewriting of address in accordance
    with the JANET (Grey Book) specifications. The most significant
    effect is that domain specifications appear in reverse order,
    e.g., edu.claremont.ymir and not ymir.claremont.edu. See the PMDF
    System Manager's Guide for further details.

    Grey Book address formats are not currently used in PMDF, so this
    qualifier's usefulness is problematic at best.