PLAIT was initially elaborated as a Gildas "task" by P.Hily-Blant us- ing original ideas from Ch.Nieten see https://articles.adsabs.harvard.edu/pdf/2000ASPC..217...72N It uses the "Basket Weaving" method described in Emerson & Graeve 1988 see https://articles.adsabs.harvard.edu/pdf/1988A%26A...190..353E.