The legislator sometimes expressly or impliedly prohibits the conclusion of certain contracts. The contract of lease may be entered into orally, expressly or impliedly. It expressly included hormonal methods as prohibited. Terms implied "ex lege" may be varied or excluded expressly by the parties. " The discriminatory conducts of its officials are "expressly and definitively prohibited. These include questions designed to establish that the suspect expressly waived their rights. It is essential to the effective exercise of other powers expressly granted to the assembly. Powers are limited to those expressly conferred by the Charter. One should note whether the acceptance is expressly conditional on its own terms. Express trusts are those expressly declared by the settlor. This marked the first time that Kennedy discussed civil rights in expressly moral terms. For the Christian Churches, any practices not expressly forbidden could be considered. Therefore Nicholson impressed about thirty citizens of Baltimore, an act expressly forbidden by Maryland law. Machiavelli wrote that war must be expressly defined. If it is expressly conditional, it is a counteroffer, not an acceptance.