A method for delivering location based information in wireless zone is disclosed. The unit quickly folds out into a fully supporting work bench for actual use of the saw andor equipment. Each node group includes a group of virtual machines. Detachable securing means provide an anti-tethering feature of the novel airship and allow the collection of data from both, an aerial perspective and a ground perspective, while providing for the collection of data from either the surface of the earth or below the surface of the water while transmitting the data to scientists, environmentalists and subscribers through the internet. The dominant colors may be used to calculate a contrast ratio that may be compared to a threshold value. The method comprises the steps extracting feature samples from a layout design; grouping feature samples into clusters; selecting at least one area from the layout design that covers a feature sample from each cluster; and saving each pattern layout covered by the at least one area as test patterns.