20. Construction of orders, etc., issued under enactments
21. Power to make to include power to add to, amend, vary or rescind, orders, rules or bye-laws
22. Making of rules or bye-laws and issuing of orders between passing and commencement of enactment
23. Provisions applicable to making of rules or bye-laws after previous publication
24. Continuation of orders, etc., issued under enactments repealed and re-enacted
