I would like to add rel=”prev” and rel=”next” (https://support.google.com/webmasters/answer/1663744) into the <head> section – of course only, where it makes sense. For example, I have a long article, which I would like to split into two documents. Now I have two documents and I like to tell Google, they are related to the same topic.
How can I achieve this in practice? Would it be possible, to have one or more custom field(s) for this in the backend editor?
Or in general – fields in the editor, to enter more and different meta information if needed?
Mario