📄️ Use must and may as a matter of preference
In English, the modal aspect of a business rule or advice can be expressed in many different ways, but it is always possible to capture it using a simple modal auxiliary: must or may, possibly in combination with not or only.
📄️ Prefer -a- as the standard determiner for nouns
In English (and this entire discussion applies pretty much to Dutch as well), there are many alternatives for expressing that a rule applies to all cases. Among these alternatives, it is convenient to choose a simple indefinite article (a or an - click Good grammar and style for the difference).
📄️ Apply fact form and guidance form consistently
Make sure you apply fact form and guidance form consistently.