Applicability of Retailers’ Occupation Tax Act and Uniform Penalty and Interest Act. All of the provisions of Sections 4, 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5i, 5j, 6, 6a, 6b, and 6c of the Retailers’ Occupation Tax Act that are not inconsistent with this Act, and all provisions of the Uniform Penalty and Interest Act shall apply, as far as practicable, to the subject matter of this Act to the same extent as if such provisions were included herein. References in the incorporated Sections of the Retailers’ Occupation Tax Act to retailers, to sellers, or to persons engaged in the business of selling tangible personal property mean persons engaged in the business of transmitting messages when used in this Act. References in the incorporated Sections of the Retailers’ Occupation Tax Act to purchasers of tangible personal property mean purchasers of the service of transmitting messages when used in this Act. References in the incorporated Sections of the Retailers’ Occupation Tax Act to sales of tangible personal property mean the transmitting of messages when used in this Act. References to “taxes” in these incorporated Sections shall be construed to apply to the administration, payment, and remittance of all fees under this Act.