The present invention is a Miniature Vein Enhancer that includes a Miniature Projection Head. The openings may be within the surface of the substrate, or in one or more layers deposited on the surface of the sacrificial substrate. This averts the possibility of disturbing the operation of the downstream circuit. The symbolic context information can be displayed, for example, on the perimeter of the map, or on the map in a distinct visual style such as a different color or font or fish-eye view.