Right now we use `revisionflag="deleted"` to generate the "Deprecated" message. In the asciidoc files we call it `deprecated`. The same is true to a lesser extent for the `coming` marker. In html and asciidoc you get it with `coming` but it docbook it is called `changed`. Those words really don't *mean* the same thing. If possible we should fix docbook to use the same words.