Brake fluid level in reservoir?

[FDchief]

Ok, just a question for all you meticulous shade tree mechanics..... Where do you fill your brake fluid to in the reservoir. On top it says to add to ring. What ring? The casting ring around the center of the reservoir tank, or the rings at the bottom of the caps? If you go to the bottom of the caps, it doesn't seem like there is enough room for expansion, and no "low" level either marks either. What's your thoughts?

[DriVer]

Fill the reservoir up to the bottom of the fill neck. That's it.

I need a mirror to check my fluid levels since it's so close up to the top of the encloseure.

[FDchief]

Thanks Driver. No mention in the chassis guide on where exactly the level should be to. Appreciate the info.