Here's a two line roll-up caption... followed by a couple lines of paint-on captions.
This r
This roll-up
This roll-up capti
This roll-up caption sho
This roll-up caption should
im
This roll-up caption should immediat
This roll-up caption should immediately er
This roll-up caption should immediately erase th
This roll-up caption should immediately erase the prev
This roll-up caption should immediately erase the previous