External reference systems for sources
Currently, it isn't possible to add a link to an external referencing system on a source page. This would be super useful where some source texts have been digitised (e.g. the DMGH has many (old) editions of letter collections that we use) so that we could link users directly to the right place in the text.
Is there any reason why this isn't possible and would it be easy to add?
(It's possible to add every single reference separately as an independent URL/web page using the references tab but this seems far more unwieldy)