The provisions of this article apply to buildings, structures,
signs, lands and uses which would not be permitted as the result of
the application of this chapter to their location or use in the Borough,
or as a result of the reclassification of the lot containing them,
or of the adoption of other amendments to this chapter after the initial
passage. This article is concerned with properties of inadequate area
and/or frontage, uses of land and/or structures for activities not
permitted in the zone and structures placed on a lot too close to
lot boundary lines for compliance with standards of the zone in which
they are located.