[racket] Generating svg-images rather than png-images from Scribble

At Mon, 14 Oct 2013 21:45:43 +0200, Jens Axel Søgaard wrote:
> 2013/10/14 Matthew Flatt <mflatt at cs.utah.edu>:
> > You did set the style for the whole document: The style provided to
> > `title` becomes the style for the `part` that represents the document.
> 
> Then I must have made a mistake. The following renders
> the fish as a png and not as an svg.

It looks like I pointed you to the multi-page HTML method, only. For
single-page HTML, the `render-part` method is inherited from
"base-render.rkt".

Both paths get to `render-part-content`, and probably that's the right
place to parameterize.