TODO: carefully deduplicate with {T100645}
== Problem statement ==
If several references cite different passages from the same book, you need to create full, separate citations. This lengthens the wikitext, and crowds the reference section. In print, this can be avoided with footnotes like "Ibid., page 29" and other conventions.
Note that there are multiple styles for these redundant citations. We will not be able to find a solution which allows for all styles.
German technical wishes page for this feature request: (de) https://de.wikipedia.org/wiki/Wikipedia:Technische_W%C3%BCnsche/Topw%C3%BCnsche/Erweiterung_der_Einzelnachweise
== Proposed solution ==
We will introduce a new `<ref>` attribute named `extends` (bikeshed naming here: T171581), which is similar to `name` in that one reference can link to another. When using `extends`, the sub-reference will appear indented under the main reference, and its footnote marker will include a derivative number like "2.1".
{F30483559}
== Implementation notes ==
=== Undeployment ===