In this chapter:
(1) "Department" means the department of public instruction.
(2) "Division" means the division for libraries and technology in the department.
(3) "Municipality" means a city, village, town, tribal government or tribal association, or a school district that maintained and operated a public library facility prior to December 17, 1971.
(4) "Network" means a formal arrangement between libraries or other informational service organizations whereby materials, information and services are exchanged and made available to potential users.
(5) "Public library system" means a system established as either a federated public library system under s. 43.19 or a consolidated public library system under s. 43.21 .
(6) "State superintendent" means the state superintendent of public instruction.