Flac Compressed

Hello!

There is a choice between FLAC and FLAC(comp) when ripping CD. What is the difference between these two choices? I can’t find this feature documented.

What is the difference between FLAC Compressed 0 and FLAC uncompressed?

Edit:
[CD Ripping] meaning of FLAC, FLAC(comp), WAV : HiFi ROSE

Thank you, but I am aware of 8 different levels of FLAC compression. But here which level of FLAC compression is on default “FLAC” setting and which is on “FLAC COMP” is not documented, so I want to know the difference and how it affects speed and accuracy of ripping.