A system is described that can aid the querying of structured data stored in a computer system, with particular emphasis on a class of complex queries representing cross tabulations and queries requiring the building of models for their resolution. The method includes providing a first display region on a user interface, the first display region being capable of displaying the plurality of elements; providing a second display region on the user interface, the second display region being capable of displaying the plurality of elements; and displaying a first element in the second display region. The water collection structure may include a mechanism for distributing photonic energy to plants growing on the agricultural land; and a water distribution system for distributing collected water from said water collection structure to plants growing on the agricultural land andor the soil in which said plants are planted. The effect bodies are packets without any munitions, and are responsible for the actual effect of the system outside the carrier. A method of generating antitoxin composed of highly-pure antibodies is described as an important defense against naturally-occurring plant andor bacterial toxins. When the comprehensive controller outputs one of the activating signals for activating one of the end effecting devices, the comprehensive controller does not output the other activating signals for activating the other end effecting devices.