A replica of the site the directory models, stored as it was found.
Why it exists
The website is the first and most important input to your organisation model. Keeping a copy means the model can be re-read and re-derived without going back to the live site, and you can see what the model was actually built from.
Several domains
If more than one domain has been crawled, a chip row switches between them.
No website
Directories not modelled from a site show an explainer instead. You can set a website in directory settings and run an audit to populate this.