The poetic function is the set towards the message itself, focus on the message for its own sake which by promoting the palpability of signs, deepens the fundamental dichotomy of signs and objects.
Roman JakobsonLanguages differ essentially in what they must convey and not in what they may convey.
Roman JakobsonEvery linguistic sign is located on two axes: the axis of simultaneity and that of succession.
Roman Jakobson