[flexcoders] 'Safe' editing of flex source code?

[Rich Rodecker]

I'm pretty sure I know what the answer to this is going to be, but wanted to
ask to be sure:  Is there a way to make modifications to flex source code,
for just a single project?  For example, if I just wanted to tweak the
Button class...in Flash we can just point to a local version of the class
and it will use that instead of the pre-compiled one.