Creampuff...
Who gets fined if dogsh*t doesn’t get picked up and properly disposed of? The dog?
Gold!
Is “shall” intended to mean something different from “must”? If not, why different words?
Exactly! Try telling that to the clowns that rewrote the PNG CAR Parts - look at Part 119 to see what I mean!
I always understood that 'shall' and 'must' were (in practice) interchangeable, but that if you really wanted to be pedantic, 'shall' applied to a person or entity that had an obligation to act in a certain way, and 'must' applied to an inanimate object.
For example (using the Yarrawonga Aerodrome sign) 'Dogsh1t MUST be picked up', or 'The dog SHALL pick up its sh1t.'
Or words to that effect.
Also, for all, it's MOIRA shaire, not MIORA.