MCHART is a flexible, modular chart parsing framework I have been developing (in Lisp) at Edinburgh, whose initial design characteristics were largely determined by pedagogical needs. PSG is a gr---n-tical theory developed by Gerald Gazdar at Sussex, in collaboration with others in both the US and Britain, most notably Ivan Sag, Geoff Pull,--, and Ewan Klein. It is a notationally rich context free phrase structure grumm~r, incorporating meta-rules and rule schemata to capture generalisations. (Gazdar 198Oa, 1980b, 1981; Gazdar & Sag 1980; Gazdar, Sag, Pullum & Klein to appear) In this paper I want to describe how I have.
