Parking is defined as touching the platform but not the playing field. In one of the Elevation animations, a robot is shown as driving up another robot that is on the platform, then gets the +5 bonus points. Does a robot have to touch the platform to be parked, as per the rules, or simply be within the vertical bounds of the platform while not touching the playing field tiles?
A robot must be touching the platform to be parked. The animation is just a visual guide/reference. For exact rulings, please consult the manual. (As you correctly did. :))