I really like this mod, but it sometimes shows an item missing, rather than the research topic. The latter is much more useful, since it shows the path needed through lighted arrows.

For example, if I hover over Mortars, it correctly shows that I also need Gunsmithing by lighting the path to the previous research topic.

If I hover over Hospital Beds, I get no arrow lighting, and a rather unhelpful "Missing Hi-tech research bench". I then have to hunt down for the research topic that gives you hi-tech research benches, which ends up being Microelectronics. If I hover on Microelectronics, I see that it "Enables construction Hi-tech research bench".

So, ResearchPal has full knowledge that Microelectronics gives the ability to construct a Hi-tech research bench, but doesn't use that knowledge to link it to the research topic and light the arrows.