1. Most of the technical terms (e.g.context, level(s), (inter)-level, rank, lexis, collocation)have been used following Halliday's use in his “Categories of the Theory of Grammar,”WordXVII (1961), “Class in Relation to the Axis of Chain and Choice in Language,”Linguistics2 (1963); “Lexis as a Linguistic Level,” inIn Memory of J. R. Firth.