A system and related method for managing terms and conditions for an agreement. The valve has a housing having a proximal end, a distal end, an intermediate segment therebetween defining a passageway wherein the flowable substance can flow from the proximal end to the distal end. The inheritance hierarchy of the system is used to determine which system classes should be tested. The planting mechanism has an air knife mounted adjacent transfer disks for straightening out the foliage as stems of seedlings before they are received by the planting disks, and the planting and transfer disks may be moved towards and away from each other for seedlings of differing heights. The tube may at least partially define the material channel. , a hand holding the device, by compensating for the touch event in the detected signal that represents both events.