As to public records prepared or received after the effective date of this Act, each public body shall maintain and make available for inspection and copying a reasonably current list of all types or categories of records under its control. The list shall be reasonably detailed in order to aid persons in obtaining access to public records pursuant to this Act. Each public body shall furnish upon request a description of the manner in which public records stored by means of electronic data processing may be obtained in a form comprehensible to persons lacking knowledge of computer language or printout format.