Ok, so let's say I want to have two versions of the film on the disc, just like a seamless branched disc would. I want to be able to select which version to watch from the menu, let's say angle 1 for the Pre-ANH version and angle 2 for the "tweaked" version. Basically the only difference between the two would be the opening crawl and various effects shots scattered throughout. It should be relatively easy to set this up in Scenarist shouldn't it?