In both the receptive and productive modes, the written and/or oral activities of mediation make communication possible between persons who are unable, for whatever reason, to communicate with each other directly. Translation or interpretation, a paraphrase, summary or record, provides for a third party a (re)formulation of a source text to which this third party does not have direct access. Mediation language activities – (re)processing an existing text – occupy an important place in the normal linguistic functioning of our societies