groff and ps/html output

["James K. Lowden" <jklowden%schemamania.org@localhost>]

Is groff supposed to be able to render man pages as html or ps correctly
as long as man(1) does the job on a terminal?  

I do 

        $ groff -T html /usr/pkg/man/man3/readline.3

and get 

        http://www.schemamania.org/readline.3.html

which does not look at all like "man 3 readline" as far as paragraphing
goes.  Postscript (-T ps) has the same problem.  

If I'm not missing an option, I don't know whether to recode the man page
or if it's not expected to work.  If it should work, will it be happy with
old-fashioned pre-mdoc markup, or, OTOH is mdoc sufficiently universal
that maybe the readline folks would accept it?  

I'm using

$ pkg_info | grep -E 'readline|ghostscript'
readline-5.0        GNU library that can recall and edit previous input
ghostscript-fonts-6.0 Postscript fonts for Aladdin Ghostscript
ghostscript-gnu-7.07 GNU Postscript interpreter

Not sure what to do.  Thanks.  

--jkl