Here is a screenshot of my just-downloaded GNT (Tyndale House) along with its apparatus.

I'm wanting to know the tricks of the trade you experts use in leveraging your apparatus. For example, is there a way to set up click or double-click to identify witnesses? (I can remember the big codices like Alexandrinus, Sinaiticus and Vaticanus, but often need a tip for the more obscure ones, all the papyri, etc.).
What about (what used to be called) sympathetic highlighting?
Have you built any VFs specific to this kind of application?
Do you have a nifty way to compare/contrast the different apparatus tools from the different texts (i.e. NA28 with this one, etc.)?
Quick ways to link this tool to some of the photos in the ancient manuscripts interactive?
What are the other undocumented tricks to make this more fun?
Just curious how the big boys (and girls) roll.