If you find options in the man page, it may be useful to see what their current values are. Thankfully, this is easy!

Simply run the tmux show-options command with a flag for the set of options you want to view to look at the global options:

tmux show-options -g

For window options:

tmux show-options -w

For server options:

tmux show-options -s

You will see all the options printed out on the screen. This is nice to get a baseline or see the kinds of values that would be accepted.