Where to specify which ACS to use for logging in?

[Tom Scavo]

On Fri, Dec 16, 2016 at 11:25 AM, Scott Koranda <skoranda at gmail.com> wrote:
>
> The artifact binding flows help with a specific LIGO use case.
> In short, the background threads used by a browser to fetch
> image URLs embedded in the main HTML page but served from
> other SPs will often succeed in the SSO flow when the artifact
> binding is used because the flow only involves GET requests
> and no POSTs.

I've never understood this use case. I don't see what the artifact
protocol has to do with images.

Tom