In the documentation of 'prmatrix' (base) I read, under Details: ‘prmatrix’ is an earlier form of ‘print.matrix’ but 'print' doesn't seem to have a 'matrix' method. And in the 'Examples' section: chm <- matrix(... chm # uses print.matrix() Is this a bug in the documentation? R-3.0.2 on ubuntu 13.10. Göran Broström