Look at the sixth topic on the left-side menu (you may need to click to expand the image, then ← to restore). If you then go to nearby Arne Parish, you will see just the same topic. The "Nature" topic networks for projects on nature across all UK Parishes using SYCL (and on this site too).
You can also have any number of links to other sites, or to documents, in the text as well as in lists on this page. However, the networking of web-sites for project pages and other purposes is unique to the System for Community Liaison. This networking is intended eventually to help Communities to "twin" across countries and form clusters for administration.
The Links Page, like the Download Page, has ability to create, edit and arrange Sections, and then to create, edit and arrange Items within the sections. A dialogue box makes it easy to paste in links to other sites, to other parts of the same site or to documents stored as Downloads, as shown here and on the Training Page.