bike, the sign frames are 50 msec, and all the other frames are 5 msec, which is about as fast as most client's browsers can run 'em. one can do frames of shorter duration, but the clients will often mention they're still going too slow. flash has the advantage of more colours, but browsers won't usually display 'em directly without specific code, which is not included in this forum thread code, for security reasons. yes, robotrix, executrix, aviatrix; these have feminine suffixes, and are derived from the use of latin in the english legal system.