A method of designing an integrated circuit using implementation directives for flow control can include the step of loading a design along with specified constraints, creating at least one instance of an data structure formed from a partial netlist, and decomposing at least one set of high level rules into simple implementation directives. Building system components may be highly inter-dependent and changes to one system element can have substantial effects upon other system elements. At least one of the tool setting stations is arranged with three punch tools in the turret diameter direction. Each of the plurality of column readout circuits is connected to a corresponding column readout line of the plurality of column readout lines and includes an amplifier, a first capacitor connected between the corresponding column readout line and an input of the amplifier, and a second capacitor connected between the corresponding column readout line and the input of the amplifier.