Hello @holmant ...
That icon...which looks a bit like a banner flag...is a subscription button. If you hover your mouse over that icon, you'll see help text that says, "Subscribe to [topic name]" where "topic name" is the name of the topic. Here are a couple Guides for you to look at:
- How do I subscribe to a discussion as an instructor?
- How do I subscribe to a discussion as a student?
I hope this will help, Theresa. Please let Community members know if you have any other questions about this. Stay safe, and be well.