They should Mark it when it when it’s new if you guess the right way up it’ll go on the reel in under a minute,if you guess wrong you can be threading for up to an hour untangling it all I’ve been there many times.
When you first get a new reel of Microbore or Minibore tease a load out before you put it on the reel and connect it,you’ll be able to see if it’s the right way up.