The state constitution is one of the few that does not expressly require public schools.
These laws often expressly require the use of edge protection or harness systems.
A European single market expressly requires the removal of such barriers.
In the United States, wax seals were never expressly required.
However, some tourists traveling to places where permission is not expressly required have reported delays due to questioning by local security personnel.
The bankruptcy code expressly requires regulatory commission approval of rate changes provided in a reorganization plan.
A period of notice may be required expressly by contract, impliedly by the pay interval, or otherwise.
Item 101 expressly requires disclosures of certain costs of complying with environmental laws.
In the armed forces (and police) of India, only Sikhs are allowed to wear beards as their religion expressly requires followers to do so.
If the offeror is reluctant to accept this risk, he can always expressly require actual receipt as a condition before being legally bound by his offer.