I had already seen that but what I am looking for is not on that list.
There is an amendment regarding marking a scorecard which contains within it a reference to the fact that a players score does not have to be on the card where it is expected to be so long as it is obvious eg player puts his score in the marker column.
Do not worry I found what I am looking for in the interpretations (3.3b/2)
The reason I said an amendment is because I was shown the full text on a phone and it was headed as such. ( I did not check the date of it and as per above have realise it is now in the interpretations)
Two players querying my ruling in a competition despite being shown the appropriate rule in the book.