Is this a feature that lets a user hide modules and reshow at the click of a button? Where can I see an example of this and how can I implement it with OMT?
i think you're referring to 'collapsable module position'
basically in OMT if you do not have any modules published in the left position you'll see that it doesn't effect how the template acts. whereas if you don't publish any modules in the left position of vivid design you'll see that the template is still expecting - so it's not a collapsable module position
Is this a feature that lets a user hide modules and reshow at the click of a button? Where can I see an example of this and how can I implement it with OMT?
This is a great feature of Andy's templates. I haven't seen this around too much!