Separate optional parameters for playbar vs "up button"

[Mark Anthoney Seattle]

Hi all, 

It would be extremely useful for me to be able to display the forward/back and progress area, but not get rid of that back button (button class 'webgl-viewer-up-button')

This would be tremendously helpful for traversing a concept "tree map" back going back one step without taking me up the arc of my subtopics. Here's a visual:

[Mark Anthoney Seattle]

Well I decided to just set the container div (class="player" if working off the demo) to a shorter height and do a "overflow: hidden" on it. This more or less only shows the back button and not the playbar.