Really, that's more clicks than you need. Most people stumble across this little trick by accident, but in case you haven't, Flash lets you edit a symbol just by double-clicking on the symbol itself. Takes less than a second, and lets you work much more efficiently. Just take care that you don't accidentally double-click a symbol before continuing work on a scene; I've done this before, and accidentally ended up adding new objects within my symbol's timeline instead of on the main stage.

