Does Must Mean Mandatory?

"Must" is the only word that imposes a legal obligation on your readers to tell them something is mandatory. Also, "must not" are the only words you can use to say something is prohibited.

What does must mean in legal terms?

'Must' always suggests an absolute obligation. Needless to say, 'may' suggests discretion ('we may fight on the beaches' conjures up quite a different image). The same applies to the combination of 'shall and may'.

What's the difference between must and mandatory?

is that mandatory is (dated|rare) a person, organisation or state who receives a mandate; a mandatary while must is something that is mandatory or required or must can be the property of being stale or musty or must can be a time during which male elephants exhibit increased levels of sexual activity and aggressiveness ...