In this chapter, the following terms have the meanings indicated. Terms Defined. “Act” means the Public Information Act, General Provisions Article, §§4-101—4-601, Annotated Code of Maryland. “Applicant” has the meaning stated in General Provisions Article, §4-101(b), Annotated Code of Maryland. “Chief ALJ” means the individual appointed as head of the Office pursuant to State Government Article, §9-1603, Annotated Code of Maryland. “Custodian” has the meaning stated in General Provisions Article, §4-101(d), Annotated Code of Maryland. “Filed” means that a document is postmarked or received in accordance with COMAR 28.02.01.04D. “Office” means the Office of Administrative Hearings. “Person in interest” has the meaning stated in General Provisions Article, §4-101(g), Annotated Code of Maryland. “Public record” has the meaning stated in General Provisions Article, §4-101(j), Annotated Code of Maryland.