13. In paragraph 20 I was describing the situation that existed rather than laying down rules or guidelines, at least so far as the first item in the list is concerned. The second and third sub-paragraphs are rules set out in Section 62(3) PE Act itself. The fourth is a "rule of thumb" which I formulated in the unreported case of Arborea v Hume City Council [2001] VCAT 2454 20 December 2001 as a useful guideline. However the first item about being an improvement on the originally endorsed plan was only meant to be descriptive and was never meant to lay down a rule that such an improvement was necessary. The test, in my view, (apart from the legal ones required by Section 62(3)) is the fourth item. An amendment can be made even if the result is not superior to the original. It could be of similar impact or, as in this case, not quite so good, as long as it is acceptable and appropriate in the circumstances and, as I have said, such that it might appropriately have been approved if originally proposed in that form.