Fader levels in Cubase Artist 9

Hi, after mixing obviously with too low levels and freaking about the digital clipping, I got bit frustrated trying to find help for gain staging in Cubase 9 manual. I couldn’t find there any mention what are the meter fader true levels.These things are left out from Artist version. But when I added a VU-meter to master bus, I noticed that 0 means actually -18 dBFS. Can somebody confirm this to me? So there should be plenty of head room when I peak 0 with master fader? If somebody knows where in the manual (more than 1000 pages) something about these very important basic things are explained, I would be interested.