Todd Dominey and Brendan Hall comment on 2 ActionScript tools available for BBEdit. One is a Flash MX Glossary for BBEdit created by Chris Jenkins and the other an ActionScript BBEdit language module, which has been hard to find and made temporarily available from Brendan Halls website, www.waxpraxis.org
BBedit is a popular coding/developing text editing tool available for the Mac including OS 9 and OS X. It is available from the Barebones website.