You're welcome!
xD, it's done by typing three times "-" or "*" next to each other with nothing else on the line itself and the lines before and after. So to illustrate it with quotation marks:
"(Empty)"
"---" (or "***")
"(Empty)"
Note that in the above example, i had to leave another empty line in between the lines. So it's not exactly correct. Unfortunately, without a break line, I can't even illustrate it. So, this is done from necessity. Though, it means that technically, the stars below were one "/" removed from becoming a line.
/***
It's genuinely hard to point towards an exhaustive source on the matter. Perhaps related to the fact that there are continuous advancements and developments going on that make it hard for something to not feel outdated very quickly. But, basically, Fedora Atomic heavily relies on OSTree/libostree for accomplishing its 'immutability'/atomicity. While, on the other hand, openSUSE MicroOS utilizes Btrfs snapshots (primarily) instead. Some implications are:
Ongoing developments may alter the above list significantly. It's even entirely possible that all features mentioned above will be found on both distros in the upcoming years. However, vision and scope are perhaps decisive when it comes to making any predictions regarding the future. We haven't gone over those yet... Going over those is out of scope for what this comment intends :P .
Can't agree more.