To add to the growing body of literature on "whiteout"... Last Friday (OK at Happy Hour), I was describing the recent discussions on whiteout seen here. A colleague followed with his recent experiences. It seems hehas been using a water-based type of whiteout for correcting blueprints. At thend of each day the blueprints would be piled on his desk and in the morning when he came in the whiteout lines that were exposed would be gone. Those underneath would be fine. It happened each night for several days. One closer examination he found there was a sort of faint fuzzy line left on the paper. Anybody guessed what caused "deterioration" of the whiteout? It was cockroaches. Every night they would come out and eat the exposed whiteout lines. It was a brand that was tempra based. One more fun fact to keep in mind. Jessie Johnson Texas Memorial Museum