18. The method of claim 17 , wherein the at least one processor is further programmed to perform: adding the substitute to a speech recognition grammar as an alternative mechanism for initializing the user-defined speech command.
18. The method of claim 17 , wherein the at least one processor is further programmed to perform: adding the substitute to a speech recognition grammar as an alternative mechanism for initializing the user-defined speech command. 19. The method of claim 18 , when presenting a prompt relating to the user-defined speech command, presenting the substitute as a mechanism for initiating the user-defined speech command instead of presenting the original command.