I have done something silly I am sure , but I don't know what it was or how to put it right
I went to place a wire in my schematic and in the little box where you choose which layer the wire goes onto I have
suddenly only got layers 91 - 98 the usual ones like 1, Top , and 16, Bottom are no longer in the list
Without realising I imagine I clicked something by mistake
Can I get them back ?