If you mean someone should document this for HG, then that is (or was) a common request. The program is overall very good, but as of a few years ago, there was NO documentation. Gene (the author) stopped working on the code for several months and put together a lot of documentation on basically everything. That doesn't mean more would be a bad thing of course. And as you found, there was a user who documented setting up his X10 setup and posted it on the forum. He wanted that to be a living document which would get updated though I doubt that will happen with the demise of the old forum. I suppose it would be good if someone were to back up all of the HG site in case Gene decides to close shop completely, too.
The code is open source and available on SourceForge but the documentation is not over there to my knowledge.