I always thought that a major reason to use Scrivener was to do with studios being very fussy about standardised formats and layouts - something that may take q

I always thought that a major reason to use Scrivener was to do with studios being very fussy about standardised formats and layouts - something that may take quite a bit of time to setup in other editors. You also don't want to do it through trial and error if they are going to discard on first failure. Is this not true? If true, how do you ensure your Emacs output matches requirements?