[R] prmatrix and print.matrix

[Therneau, Terry M., Ph.D.]

The help page for prmatrix states that it only exists for backwards compatability and 
strongly hints at using print.matrix instead.
  However, there does not seem to be a print.matrix() function.

The help page for print mentions a zero.print option, but that does not appear to affect 
matrices.  This (or something like it) is what I was looking for.

Am I overlooking something?

Terry Therneau