[Xmonad] DynamicLog.hs and multiple xinerama screens

Are there markers attached to workspaces that let you identify when a workspace is being displayed on a screen ? This is as distinct (but similar to) whether a workspace is the current active workspace. At the moment, the output of DynamicLog is great, but since I have 2 screens it would be good to know which workspace I have up on the other screen as well (so I don't keep tripping over grabbing it as I trawl my workspaces). If there's a marker for which workspace is where I assume this should be a simple mod ? Cheers Dave