// From code.ys.def:
OMDef( "Integrate", "calculus1","defint", // Same argument reordering as Sum.
       { $, _2 .. _3, OMBIND(OMS("fns1", "lambda"), OMBVAR(_1), _4) },
       { $, _{2,2,1}, _{1,1}, _{1,2}, _{2,3} }
      );
OMDef( "AntiDeriv", "yacas","AntiDeriv" );
