[racket] Scribble commandline interaction

Is there a way to typeset not just a command line, but a command line 
interaction, e.g. something like:

    $ svn help
    Subversion command-line client, version 1.6.5.
    ...

Using commandline doesn't get the line breaks right and inserting 
explicit linebreak's messes up the alignment on subsequent lines.  Using 
verbatim does the right thing, but doesn't align consistently with 
commandline uses (which I'm also using).

Thanks,
David