New to the board?
When Q posts in the bread the trip code changes color, flashes if you will, if it stays a steady color it's not legit just a shill typing the trip code in.
If you are not in the bread and see something like you posted elsewhere you go to the qmap.pub or another scraper ( I prefer qmap) to see if it's there.
As far as seeing a q post elsewhere and you want to jump into the bread. Go to the current bread, just look at the time on the post you saw elsewhere and scroll to it. If it was in the previous bread it usually doesn't matter because it will show up at the top of the next bread or some anon will be responding to it in the current one.
Hopes this helps.