Man, you are good. Yes, I think that was it. I am one of the few people who capitalizes everything. I know, it's not p.c. and it suppossedly means "screaming". I never mean to scream, but for most of my life I wrote in capital letters, by hand as well as on the typewriter, on the telex and now on the computer. normally I notice it on Flyertalk, because it automatically corrects me to lower case. But when I did just numbers and airport codes, I got the lower case as a result. I think, you solved the puzzle. Thanks.