The binding principle established by the majority is that when interpreting town planning scheme provisions, particularly density controls, courts must give effect to the plain and ordinary meaning of the words used in the current scheme provisions, interpreted within their textual and historical context. Where a municipality has deliberately amended scheme provisions to remove previous linkages or restrictions (in this case, de-linking GLA from "shops" and instead referring to "total GLA of the Property"), courts will not read back into those provisions what has been deliberately removed. The term "total GLA of the Property" in density controls means all gross lettable area on the property, not merely retail shop space, particularly where: (1) the scheme itself does not define or limit GLA to shops; (2) the density controls do not distinguish between shop and non-shop uses; (3) the municipality has through successive amendments moved away from linking GLA exclusively to shops; and (4) density control considerations (traffic, environmental impact, overall development intensity) support a broader interpretation. While the purpose of a zoning scheme is relevant to interpretation, it cannot override the clear language deliberately chosen by the municipal authority in its amendments.