How to comment in a windows.tmux file

My ~/.byobu/windows.tmux file is getting a bit complex and I would like to document it with comments. How to insert comments in Byobu's windows.tmux file? Using # as seen below results in a unknown command: # error message. # Start monitors for each customer new-session -n va /home/me/bin/monitor-1.sh; new-window -n vk /home/me/bin/monitor-2.sh; new-window -n vd /home/me/bin/monitor-3.sh; new-window -n su bash ; Versions: $ byobu --version byobu version 5.92 tmux 1.9