Just to clarify - the grid layout isn't compulsory; it's an optional package. But it's a good example of a thing which is a hard problem in TeX (http://tex.stac

Just to clarify - the grid layout isn't compulsory; it's an optional package. But it's a good example of a thing which is a hard problem in TeX (http://tex.stackexchange.com/questions/1418/grid-system-in-latex http://tex.stackexchange.com/questions/1418/grid-system-in-l...) and an easy one in SILE.