I recently picked up a lightly used BT-2 for a great price ($180 with stove jack).
I was pitching it and making some stake loop extensions with 550 cord. Anyway, I noticed a couple features that I don't know what the intended use is, so maybe you can let me know.
First, four loops sewn in on the interior, up at the cone,
Second, there are short nylon ties on two of the interior stake loops, between the doors, and opposite each other,
Overall, looks like an awesome solo shelter,
Thanks, Shane