Every gas, electric, steam heat, telephone, water, or sewage disposal company when filing pursuant to Public Utilities Article, §4-203, Annotated Code of Maryland, any proposed change in rates or regulations to its current tariff (for a typical illustration of a currently effective schedule, see §D of this regulation) shall show by brackets the rates or language proposed to be eliminated and show by underscorings the proposed rates or language (for an illustration of a typical schedule showing proposed changes, see §E of this regulation). The underscored proposed rates shall be placed adjacent to the bracketed current rates. Every gas, electric, steam heat, telephone, water, or sewage disposal company planning to file a proposed change in rates or regulations may make a written request to the Commission, with reasons therefore, for permission to submit as an alternative to the procedure specified in §A of this regulation, statements showing on separate sheets: All changes in rates or regulations being proposed; The present rates or regulations; The proposed rates or regulations; The dollar increase or decrease; and Any changes in text and such other data that is meaningful with respect to the proposed changes. Every filing by each gas, electric, steam heat, telephone, water, or sewage disposal company shall be accompanied by a letter of transmittal which shall set forth as a minimum, the following data: The percentage increase or decrease and dollar amount of increase or decrease in operating revenues resulting therefrom. The percentage increase or decrease and dollar amount of increase or decrease for the various classes of service. The percentage increase or decrease and dollar amount of increase or decrease in the various rate blocks within the various classes of service (where rate blocking is utilized). The purpose and the effect of any proposed change in language or regulations. Currently Effective Tariff. Tariff Showing Proposed Changes.