SVG powered images

[hh]

> JL wrote:
> If it were from that, then we could not switch back and forth
> between resizing different images. It would show the output of
> the previous image processed. But that does not happen.
> I thought I chained the commands linearly, but I will check
> that again.

I didn't say the second call shows the result from the _previous_ call,
I said it shows the result from the meanwhile finished _first_ call
(with that svg data, that is thereafter cached).