I did a search on half-elf and force manipulation and got 0 results. which seams very odd to me since i can hardly be the only person to notice that force manipulation shows up in my enhancements when i select show unavailable, but can not be selected even though i meet the listed prerequisites for it.

listed prerequisites are half-elf level 2, points spent 3.

so, is the force manipulation line available to half-elfs with 1 level of an arcance class? not available at all, available only if you have arcane archer? what am i missing here?