Physical format-specific notes for Conditions Governing Access

Based on granular information about physical format type, mentioned in issue #1, it would be good to generate a format-specific note about conditions governing access. DACS 4.3 mentions:

"Commentary: Special equipment may be required to view or access some material, particularly audiovisual materials and records in electronic form. In some cases the equipment required may be obvious from the Extent Element, as in “forty-two slides” or “thirty audio cassettes.” In other cases, however, the type of equipment required should be indicated in the Physical Access Element; for example, the playing speed of audio discs (e.g., 45 or 78 rpm), a video’s recording mode (e.g., Betamax, D2, VHS, Video 8, etc.), or broadcast format (e.g., NTSC, PAL, SECAM, HDTV, etc.), the gauge (width) of the film (e.g., 16 or 35 mm), and so on."

http://www2.archivists.org/standards/DACS/part_I/chapter_4/3_technical_access