MADCAP is a programming language admitting subscripts, superscripts and certain forms of displayed formulas. The basic implementation of this language was described in a previous paper [MADCAP: A scientific compiler for a displayed formula textbook language, Comm. ACM 4 (Jan. 61), 31-36]. This paper discusses recent improvements in the language in three areas: complex display, logical control, and subprogramming. In the area of complex display, the most prominent improvements are a notation for integration and for the binomial coefficients. In the area of logical control the chief new feature is a notation for variably nested looping. The discussion of subprogramming is focused on MADCAP's notation for and use of “procedures.”
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