set $mode_session session [s]elect [r]ename [f]latten
bindsym $mod+s mode "$mode_session"
mode "$mode_session" {
    bindsym s exec --no-startup-id ~/bin/way_select_session.py, mode "default"
    bindsym r exec --no-startup-id ~/bin/way_rename_workspace.py, mode "default"
    bindsym f exec --no-startup-id ~/bin/way_flatten_sessions.py, mode "default"

    bindsym Escape mode "default"
    bindsym Return mode "default"
}