My question has been, for a bloody while now, how do you write the in a way that you can actually move from place to place... a la Tex or Unicode or some special way of writing it as an equation in word... something. Arrow indicators over letters (as attached) are similarly impossible to find. It's a real pain in the ass if you want to go all digital on your HW. You'd think by now it would be baked in to the various applications that allow you to write your own custom equations or deal with them (wolfram Alpha,Mathematica, Maple, SOMETHING). Frustratingly not the case. :/
Please help guys.