What are backlinks and how we use it to stop deleting?
Backlinks is a way to show how many times that particular post, page, form, events, aggregations have been used in the slice.
When you click on the purple link of backlinks, it will take you to page which lists down all the pages and number of slices where that content has been referenced.
If the backlink count is greater than 0, then it will block you from deleting the content until you remove it from the slices where it is used. This ensures that you don’t end up deleting the content if they are used anywhere on the site.