Until a recent ruling modernizing the habit, the headpiece of the Daughters of Charity consisted of a folded cornette derived from 17th Century Norman peasant costume. It was the cornette, ""like big white birds in flight,"" that caused tiny Sister Bertrille so much trouble when she came to the windy island of San Juan. Sister Bertrille could fly, and she did, winging her way at the end of a line of pelicans. She was shot down, right into a security area, where she was placed under arrest. Eventually all were satisfied that she was not a spy and she was permitted to go free, but not to fly--Don Scarpo's fishing weights took care of that. Gallican whimsy on wings of inspiration.