Template:M comp disc GMSLA 27.3

Amazing how so small and harmless looking a slug of boilerplate can bury so many unexpected and, really, unnecessary problems. This is a no oral modification clause for an agreement where much communication, pricing and transacting happens in a fairly informal way<ref>Less so nowadays with commercial electronic settlement systems like Equilend — but quaintly archaic mention of telexes and fax doesn’t help, nor does electronic messaging system.