"diagram"

means a document containing geometrical, numerical and verbal representations of a piece of land, line, feature or area forming the basis for registration of a real right and which has been signed by a person recognised under any law then in force as a land surveyor, or which has been approved or certified by a Surveyor-General and includes a diagram or copy thereof prepared in a Surveyor-General’s office and approved or certified as such, or a document which has at any time, prior to the commencement of this Act, been accepted as a diagram in a deeds registry or Surveyor-General’s office in the Republic or in any such office situated in any area which became part of the Republic at the commencement of the Constitution, 1993;