The Support & Maintenance Pack (SMP) provides unlimited technical support and allows you to upgrade to all <oXygen/> XML Diff Component versions, either minor or major that are released within one year from the purchase date, at no additional cost. The SMP Renewal can be bought only within a period of 14 days after a previous SMP has expired, or bundled with a new license. One Support & Maintenance Pack license covers one license of <oXygen/> XML Diff Component.