3.261 Every defined sign signifies via those signs by which it is defined, and the definitions show the way. Two signs, one a primitive sign, and one defined by primitive signs, cannot signify in the same way. 3.262 What does not get expressed in the sign is shown by its application. What the signs conceal, their application declares. 3.263 The meanings of primitive signs can be explained by elucidations.
Elucidations are propositions which contain the primitive signs.
They can, therefore, only be under stood when the meanings of these signs are already known.