What is o7?

It seems you might be referring to various things that "o7" could represent. However, one common interpretation of "o7" is as an emoticon or text-based representation of a person saluting. The "o" represents the head, and the "7" represents the arm and hand giving the salute. This symbol is often used in gaming communities, forums, and chat platforms to convey respect or acknowledgment.

If you were referring to something else by "o7," please provide more context, and I’d be happy to help with further information!