As used in this Article:

(1)        “Depository library” means a library designated to receive and maintain State publications and make them available to the public.

(2)        “Document” means any printed document including any report, directory, statistical compendium, bibliography, map, regulation, newsletter, pamphlet, brochure, periodical, bulletin, compilation, or register, regardless of whether the printed document is in paper, film, tape, disk, or any other format.

(3)        “State agency” means every State department, institution, board, and commission.

(4)        “State publication” means any document prepared by a State agency or private organization, consultant, or research firm, under contract with or under the supervision of a State agency:? Provided, however, the term “State publication” does not include administrative documents used only within the issuing agency, documents produced for instructional purposes that are not intended for sale or publication, appellate division reports and advance sheets distributed by the Administrative Office of the Courts, the S.B.I. Investigative “Bulletin”, documents that will be reproduced in the Senate or House of Representatives Journals, or documents that are confidential pursuant to Article 17 of Chapter 120 of the N.C. Gen. Stat.. (1987, c. 771, s. 2.)