I have some multi-miced drum recordings with several take lanes for each track.  I find myself toggling show/hide take lanes a lot but can only seem to do it for one track at a time.  This is a pretty significant work flow obstacle. Is there any way to select multiple tracks and toggle all of them at once? 

Like other controls that can be quick-grouped, Ctrl-clicking the take lane button will toggle take lanes for all selected tracks. But you do have to select all tracks first (Ctrl-A), and if any already have their take lanes open, they'll be toggled closed while others open. 

Interesting. I did not try that specific approach, but I did try selecting all, then right clicking on a track and selecting "show/hide" take lanes which I thought would do the same thing. The result was that only the track I actually clicked on changed.  Perhaps using the button will give a different result. I will try that. Thanks.