MAddToParticlesQ CoordinateList.l,NumPoints.l,IncA.l[,IncB.l] ; Add X.q,Y.q to X.q,Y.q items in particle list

Does the same as MAddToParticles except that the coordinate list comprises
X.q,Y.q pairs of items, and the increment list also contains X.q,Y.q data. If a
second increment list is specified, its X.q,Y.q contents will also be added to
the data.