161As regards, first, the general principle of legal certainty, it must be recalled that this fundamental principle of EU law requires, in particular, that rules should be clear and precise, so that individuals may ascertain unequivocally what their rights and obligations are and may take steps accordingly (judgment of 10 January 2006, IATA and ELFAA, C‑344/04, EU:C:2006:10, paragraph 68 and the case‑law cited).
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