The invention discloses a method, computer system and computer program of interacting with a user of a messaging client. The location naming component is configured to receive an identification of the location as a location of interest. Therefore, coupling capacitances seen at an equal node with respect to the two flip-flop circuits appear to be different from each other. The outer periphery is receivable by the fixture which has a bore for complementarily receiving the outer periphery of the housing. In another position of the arms, the variable sized aperture permits the pencil to slide through the pencil sharpener. An electromagnetic signal is applied to the neural tissue through an electrode.