Servitude is a term which indicates the subjection of one person to another person, or of a person to a thing, or of a thing to a person, or of a thing to a thing. Here it refers to a charge laid on an estate for the use and utility of another estate belonging to another proprietor. Examples are the right of passage over the serving estate, to draw water from it, to take coal, lime and wood from it, or in urban areas, the right of resting the joists in the wall of the serving building, of opening windows which overlook the serving estate, etc.