Rezzing an inventory object consisting of several unlinked objects (for example, four planks forming one bigger plank) through llRezObject() will lead to the objects being (apparently) positioned relatively as they were when picked up, but each rotated as specified in the rez command. This is a breach of my expectation, as the relative offsets should be rotated along with the objects themselves. Otherwise the rezzed inventory item tends to look horribly broken. (which even in the case of a sheet of broken glass, doesn't work out well)