A useful shorthand: {{{screen -dR}}} is like {{{screen -dr}}} except it adds a "if I don't already have a session, create one" step.
-You can uses {{{screen -x}}} to attach a screen session
+You can use {{{screen -x}}} to attach a screen session that's already attached somewhere without detaching it first. This can
+have side effects if the other place is already attached or is in a window that is a different size than your current one.
+It's useful when you want to share context between different screens, or even different people, but doing it when you're not
+sure where else your screen might be attached has privacy implications.