A specialized graphical user interface for use with interactive large-format display systems provides for intuitive operation and flexible content presentation. A via etch to the conductive features which is selective between the first and second dielectrics will stop on the dielectric etch stop layer, limiting overetch. The front wall can be formed in a linear configuration or in a curvilinear configuration to reduce the separation bubble commonly associated with the passage of air over the raised leading edge of the rain-hat.