Yes, that is a very good answer. It addresses both the general situation and the OP's specific issues. I might edit to add a link to the documentation.

As a frequent asker but infrequent answerer (due to experience) I prefer the answers with links to the fine manual, but I do tend to accept those answers with teh codez as the added effort by the answerer does deserve the reward, and also to help those who come after me find the relevant info quickly. Perhaps I should state clearly in the question that I'm looking for documentation, not a solution. That does seem to be against the scope of SE sites in general, though.

@lain: Thanks. Your assertion strengthens my argument: provide a link and close the question. Those who don't want to learn, won't.