“max fac” When referring to the Brexiters’ preferred partnership use maximum facilitation at first mention, then “max fac” (quotes on first use). Adjectival use requires a hyphen, eg the max-fac option. maxidress may or might? The subtle distinctions between these (and between other so-called modal verbs) are gradually disappearing, but they still matter to many of our readers and can be useful. may implies that the possibility remains open: “The Mies van der Rohe tower may have changed the face of British architecture for ever” (it has been built); might suggests that the possibility remains open no longer: “The Mies tower might have changed the face of architecture for ever” (if only they had built it). Similarly, “they may have played tennis, or they may have gone boating” suggests I don’t know what they did; “they might have played tennis if the weather had been dry” means they didn’t, because it wasn’t.