What is my Tmux Previous Window?
Today I noticed a symbol in the Tmux bar that I had not noticed before, the dash (-) next to frontend:
0:code* 2:api 3:frontend-
In a Tmux session, asterisk (*) is the window in focus. The dash is the previous window, which you can easily return to. From window 0, code, I can return window 1, frontend, using CTRL + bb.