Below please find descriptions of abbreviations to our products. Please note that our video products do not have subtitles unless otherwise mentioned in the desription of the item. Some recordings have foreign subtitles such as Spanish, Japanese, or Italian. Some operas are actually performed in English as is denoted by "In English" in the product description. NP = Non-Professional Recording = Fair Quality, dark, possibly out of focus at times O = Optical Transfer, Flicker, not the best quality SS = Spanish Subtitles ES = English Subtitles JS = Japanese Subtitles FS = French Subtitles GS = German Subtitles IS = Italian Subtitles DS = Dutch Subtitles BW = Black And White Picture F = Fair Quality, Might have Audio or Video Flaws NP/D = Non Professional/Distant. Far away picture H = Halo effect, color is not consistent