Originally Posted by
Nanook
We just flew out of FRA on UAL last week. First time I had seen this: The boarding numbers were on an upright bar with the headings: Group 1, Group 2 and so on to Group 5 (it was a 747). Everyone lined up in their appropriate lines. It was great. There wasn't that much space at the gate, either. But it worked.
This sounds like Southwest to me.