"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, confirmed or certified by the office of the Surveyor-General, and includes a diagram or copy prepared in the office of the Surveyor-General which has been so approved, confirmed or certified;

[Definition inserted by section 1(c) of Act No. 24 of 2003]