Ohio Rev. Code Ann. § 993.08
(A) No rider shall fail to do any of the following:
(B) The director, in accordance with Chapter 119. of the Revised Code, shall adopt, and may amend and rescind, rules governing the types of warnings and directions required to be followed pursuant to this section. Rules adopted by the director determining the types of printed warnings and directions shall include specifications as to the character, size, and print size of such warnings and directions. At a minimum, the rules shall require the following: