A heat sink comprises a core member comprising at least one first surface adapted to contact at least a portion of the heat source. The same high intensity plasma-arc heat source may also be used to form a permanent pattern on the glass surface\u2014the pattern being raised above the glass surface and integral with the glass by use of, for example, a screen-printed ink composition having been irradiated by the heat source. Form data specified by the response message can be stored within memory when the form data is valid, as specified according to the electronic form.