A sheet turning apparatus includes a vacuum source used to capture and hold a sheet onto a rotatable disc that is connected to a servo motor. First, a number of sectors to be read is determined. Such articles include retroreflective sheeting, structured abrasive articles, adhesive articles suitable for use in personal care products, and the like. A storage management module distributes stored files and their accompanying profiles among the plurality of storage media according to predetermined patterns. From an external audio interface, an audio signal is transmitted via the second audio source interface; at this moment, the headphone is operated under a speaker mode. The HTTP-API provides client side users with the ability to use the computer resources of a remote server computer to effect transaction processing andor the transfer of information from one computer to another without having the absolute need for a web browser, plugins or software languages contained within the server system.