The new rules regarding the wording of the General Contractual Clauses are in force since August 25th. Noteworthy is the fact that, in the relations between companies and final consumers, the clauses written with a font size of less than 11 or 2.5 millimeters and with a line spacing of less than 1.15, are considered, for all legal purposes, as absolutely prohibited, generating its nullity, which may be invoked by any interested party.