Instead of emitting a CSS `counter-reset` for each footnote marker, Parsoid will emit literal text such as "[1]". This makes it possible to do localization and alternative counter markers as part of programmatic document rendering, makes it simpler to implement "extended" subreferencing, simplifies the output markup, and improves consistency when copy-pasting article content.
Historical note: CSS `counter-reset` numbering was first introduced into Parsoid in {T86782}, but the legacy Cite parser has always used explicit numbering.
Many sites are using CSS customizations for these numbers, and this must be considered during migration to explicit numbering. When this epic is complete, the customizations should be removed.
Out of scope: some related tasks will be implemented separately. Experience gained during this task can be applied to the other issues, we'll refine the other tasks' descriptions to add this info.
* {T370879}
* {T370883}