I want to have a reseaech prerequisite another but I don't want/can't have the arrow. Basicly I want the research to be above the one that pre-requisites it, in the same tier but up a row. I know the arrow is only able to go to the next tier or down a row, but is the arrow really that important. Do'se it have to be there. If so can the arrow's be altered so they go up. Or also can you have it so a pre-requisited research is on the other side of another unrelated research button, or in any other place an arrow can't access.
Edit; Ok! so I have worked out that the arrows are not neccesarily needed, its only the dev.exe that give's an error. It would still be nice to have them though. Can it be done?