What do the filters "B" "I" "A" I see on forums mean?
Assuming, beginner, intermediate, and advanced. It's a tag that lets respondents kind of gauge the level in which they should respond.
Thanks Student100. Is this selected by the OP or by votes? Is this documented anywhere?
This has been covered in the Feedback & Announcement forum: https://www.physicsforums.com/threads/new-thread-level-prefixes-b-i-a.824360/
It is selected by the original poster, although the mentors will change it if it appears to have been poorly chosen. If you come across a thread with a level that looks wrong you can report it, just as you would report a thread started in the the wrong forum.
Separate names with a comma.