Which project's data?
Collections belong to one project. Projects appear here once they're saved to your account (open one in the builder while signed in).
The first text field is each entry's title and page address.
The first row names the columns: field names or labels, plus optional slug, seo title and meta description. Rows with the same slug update the existing entry.
Anticode fetches the source from its own servers, over https only. Private and internal addresses are refused. Re-syncing updates entries by their id in the source.
Shows this collection as a section of the page, in the project's own design. Each entry also gets its own page and appears in sitemap.xml when you publish.