Hans, > there are user nodes that you can inject > > \def\dummynode#1{\directlua{ > local n = node.new("whatsit",node.subtype("user_defined")) > n.type = 100 > n.value = #1 > node.write(n) > }}% > > foo\dummynode{123}bar Thanks, this is what I was looking for, but is not node.write experimental? Or has it come to stay? Javier