A photomask blank substrate is selected for use in a process where at least a masking film or a phase shift film is deposited on a top surface of a photomask blank substrate to form a photomask blank, the deposited film is patterned to form a photomask, and the photomask is mounted in an exposure tool. The compounds are eminently suitable as bonding agents, in particular in dental adhesive materials. Such smart placement of virtual objects enables the user to readily discover new objects when they are introduced into the virtual reality environment, and then interact with the objects within a range of motions andor head positions that is comfortable to support a more optimal interaction and user experience. In addition, if a solvent is used in an attempt to alter the printed image on the substrate, the dye migrates or diffuses to indicate tampering with the document.