on a patch send recently on this list i discovered many messages than
matrixctrl understands and which are not documented (or i failed to
find the doc, be it in the help file, or in the max-ref.pdf - in
which finding matrixctrl is... not difficult but less easy than
finding info about the other objects)
where would be a list of all the messages the object undrstands???
(ok, ctrl - option gives the list but not the meanings and the ranges)