The light emitting portions 140 are mounted on the substrate 120, and emit neutralization light. The inventive waveguide structure features discontinuous trenches formed on either side of the waveguide in which the waveguide has a first polarization characteristic absent the trenches and a second polarization characteristic when the trenches are present. The priorities may be adjusted in a priority window allowing drag and drop reordering of idea and numeric weighting of ideas using a slider control. The vertical micro-actuator couples with the planar micro-actuator arm.