Uwe Lück wrote: > At 02:53 01.03.09, Tim McKenzie wrote: >> On Saturday 28 February 2009 21:14:54 Benjamin Sambale wrote: >> I've heard about a package called fouridx that might help you solve this >> problem, but I haven't tried it. There's also the "tensor" package. Though it could be that it's equivalent to fouridx or \sideset. Maybe worth a look. Toby