The manual does not explain how you select what resources in your military and civilian resource trees??? Say for example I cick on the military tab to the left. I then have about 4 icons lit and under different catagories. Like hull metalurgy, laser upgrade and etc. Am I suppose to click on EACH ONE of those lit up icons or are those icons just telling me what research is being done in that military research tree? I click on some and a number appears sometimes, while other times no number appears in the icon box? Would someone please explain this more clearly to me.Thanks