What does the letter in VSCO preset name mean?

Question

I an talking about Camer RA VSCO presets. For a given file there are several version:

C - Agfa Scala 200
F - Agfa Scala 200
L - Agfa Scala 200
N - Agfa Scala 200
O - Agfa Scala 200
S - Agfa Scala 200
SO - Agfa Scala 200

Applying one or the other doesn't seems to make a difference. What does those letters stand for?

Answer 1

From the website help it looks like these match my first guess: names of camera makers.

C = Canon
F = Fujifilm
L = Leica
N = Nikon
O = Olympus
S = Sony

... and are you sure that last SO isn't SC for "Standard Cameras"?

Answer 2

VSCO --- Visual Supply Company