title: tmux synchronize some but not all panes
body: <p>In tmux I have a 3 columns and 2 rows layout, the top row is ssh connection to all my server and the bottom is all the same servers running top.</p>
  
  <p>I am trying to sync the top row so if I enter a command all three panes copy the same command, I tried synchronize-panes but as the man pages says it will run the commands through all the panes which then plays havoc with my all my 'top' on the botton row.</p>
  
  <p>is there anyway to sync a set of panes?</p>