La expresión del día: Del mismo tenor y a un solo efecto

In Legal Spanish documents it is very common to see at the very end of them this expression:
Se firman x ejemplares de un mismo tenor y a un solo efecto. You may have wondered what exactly that sentence means. The answer is actually rather easy; it means that the contract is signed in x amount of equal copies and all of them with the same objective; basically what is saying is that even if there are, let’s say, 3 copies, all of them are identical and all of them refer to the same contract. So why we make so many copies? mainly for registration. Sometimes a contract, like a share purchase agreement, has to be registered at the corporations register (some countries call it Registro de Sociedades) and that register will not accept anything less than an original contract to certify a registration. dc