In an earlier contribution to this discussion,
Richard wrote:

what distance from the wall should the toilet waste hole be for a
close couple toilet?

I'm not sure whether there is an absolute standard - or whether different
toilet/cistern combinations vary. If the toilet has a horizontal outlet -
needing a right-angled plastic bend to be fitted, there's slightly more
tollerance than if the outlet goes straight down into the floor.

FWIW, I have 3 close coupled toilets (bathroom, en-suite and downstairs
cloakroom) and they are all in the region of 100mm from the wall to the
centre of the hole.
--
Cheers,
Set Square
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