I am in the process of studying for my FAA UAV license. I was reading about Class E (SFC) airspace, which goes from surface to 1,200' (I believe). It is marked on sectionals as a magenta dashed line, and usually runs perpendicular to an airport. So, my question is, why isn't Class E (SFC) airspace picked up by drone warning software? Shouldn't all drone pilots be warned about these areas? The Class E (SFC) areas extend beyond the 5 mile airport rule.