At least one example embodiment discloses terminals including at least one alterable function key and a display to display in proximity to the key an indication relating to the function of this key, which includes indicating to a communication server which types of indication the terminal is able to display in proximity to this key, sending, from the server to the terminal, information defining at least one KPML command that the server is capable of receiving and that it is capable of executing and information defining at least one indication associated with the command and which must be displayed on the terminal, in proximity to an adaptable function key depending on a telephone state of an active communication.