Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> So I'm not sure that specifying the class="parameter" bit does anything in
> reality, or that changing lines to add or remove it will have any effect.
I concluded a long time ago that it does nothing. We have a good
mix of places that write <replaceable> with or without that, and
I've never detected any difference in the output. So I tend to
leave it out, or at most make new entries look like the adjacent
ones.
regards, tom lane