A basic understanding of flash, computers, combined with browsing the web and making observations and deductions. 1) With HTML you don't have to use textar

A basic understanding of flash, computers, combined with browsing the web and making observations and deductions. 1) With HTML you don't have to use textarea controls. 2) Saving an SWF is not trivial. 3) How much of your target audience really bothers to find a resource viewer? 4) It's necessary because your users don't have a resource viewer. 5) So the flash developer has to know what 'url fragments' are in order to make portions of the app bookmarkable. 6) I can't think of a flash app where open in new tab works. Obviously it is not trivial to implement