Final answer:
The 'Indications and Usage' section of a medication's package insert contains information about its use for treating seizures.
Step-by-step explanation:
The section of the package insert that has information about which medication is used to treat seizures is Indications and Usage. This section provides details about the conditions the medication is approved to treat, in this case, managing seizures. Anticonvulsants, such as diazepam, are mentioned in this section because of their role in improving long-term prognosis and reducing the risk of brain damage by managing seizures.