In the Details column on the far right above, there are four characters. Their meaning is explained as follows:
Left: Deals with authenticity. S means secure; S* means secure in my opinion; D means disputed; P means possible;
U means unlikely. If the D, S or S* is in bold-italics, this just means the edition is transposed from the original pitch.
Second from left: The number of pages in the edition.
Second from right: Audio and video recording information (all audio is MP3). R means "real singers"; * means a live performance of which a video is available; ** is also a live performance but audio-only; s means a simulated performance for computer-generated recorder ensemble.
Right: whether a translation is included in the edition: either Y (yes) or NA (not included - available readily elsewhere).