It was too busy for me to get a good picture of the guy making roti, which is a shame, since it's almost magical watching him.
For each roti, to order, he takes a ball of oiled dough and rhythmically rubs it over the metal grill in front of him until it's a thin, crepe-like pancake and starting to hold its form. Then it gets flipped a couple of times in a pizza-like manner until it's much larger than a typical dinner plate.
He then folds it up into a square-like package and lets it grill until crispy, flip, and repeat. As the last step, he kind of fluffs it up and deflates it with his hands, serving it up alongside a bowl of curry.