In this chapter, the following terms have the meanings indicated. Terms Defined. “Act” means State Government Article, §§10-611—10-628, Annotated Code of Maryland. “Custodian” means the head of a Department organizational unit having personal custody and control of the public record that is the subject of a request under the Act. “Department” means the Department of Commerce, and any of the agencies, boards, commissions, corporations, authorities, trusts, divisions, or offices included within the Department of Commerce under Economic Development Article, §2-117, Annotated Code of Maryland. “Official custodian” means the person who is responsible for the maintenance, care, and keeping of the public records of the Department. Unless otherwise provided by law, the Secretary is the official custodian. “Person in interest” means a person or governmental unit that is the subject of a public record, or an authorized designee of the person or governmental unit, or, if the person has a legal disability, a parent or legal representative of the person. Public Record. “Public record” means the original or any copy of any documentary material, regardless of physical form or characteristics, made or received by the Department in connection with the transaction of public business. “Public record” includes a document that contains the salary of an official or employee of the Department. “Requester” means a person or governmental unit requesting access to public records under the Act. “Secretary” means the Secretary of or the Secretary's designee. “Working day” means a day other than Saturday, Sunday, or a State holiday.