JDF BASICS -- It's Just the Ticket

While on the subject of customization, U.S. printers are likely to be interested in the short paragraph on units. Reflecting the European bias in its development, JDF specifies metric units of measurement be used as the default for most values. "That means you can't use alternate units instead of the defined default units. Overriding the default units defined in this table is non-standard and may lead to undefined behavior," the documentation warns.