When i move objects then snap lines help to align them with other objects on the graph. But when i want to align objects with objects where other objects lay in between those two objects, then it is not possible to use the snap lines to align them. Furthermore it is not possible to align objects using snap lines when e.g. one object is placed on another object, and the third object is not placed on that others 'parent' object. E.g. a shape B is placed on a rectangular shape A, and another shape C is placed besides A and B, and i want to halign shape C to shape B.
I hope its clear what i mean :) I put a example to the following graph: