There is a helpful guideline issued by the CAA to examiners - they are supposed to ensure that it is made available to candidates.
Did a search on the CAA website ( entered
standards documents into the general search field - NOT the publications search field).
If the link doesn't work, look for
Standards Document 19
Best of luck.
BTW - if you think the examiner has tricked you in any way - or you get something like the "go arounds" listed above (it's up to YOU if/when to go around), you should appeal under "Section 6".