An apparatus and a method for designing a data market experiment given a fixed budget and a set of potential subjects for the experiment are described. The snapsheet mode presents a series of rendered still images corresponding with the authored poses of one or more selected entities. Each branch instruction is identified and evaluated to be one of true and false. Subsequently, the device establishes a plurality of first network links respectively corresponding to the plurality of terminal devices with the first network, and stores mapping information for the first network link corresponding to a relationship between the plurality of terminal devices and the plurality of first network links. A printer is coupled to the computer and driven to print the document.