Our next A/B test is the Minerva TOC feature. This feature has two variants (`?mpo=mobile-toc-abc:treatment1` and `?mpo=mobile-toc-abc:treatment2`), and targets logged-out users of the mobile site (Minerva skin only).
Per T416503, **we will only conduct this experiment on Parsoid-rendered views**. This means that both control and experiment groups will be opted in to Parsoid. We won't test any experiment features against legacy-parser-rendered content.
Before we launch the Minerva TOC experiment, let's check the following things:
==== Analytics
- [x] Confirm that the experiment. has been created in Test Kitchen and has the correct start and end dates **- https://test-kitchen.wikimedia.org/experiment/mobile-toc-abc ** - start date: **Feb 24 2026** - end date: **Mar 24 2026**
- [x] Confirm that all appropriate events are being submitted according to the instrumentation spec (this should be done locally in dev environment) – this should be tested for both feature variants **as well as the control group**
==== Content test
- [x] Both versions of the feature have been tested in all relevant language wikis
[x] Arabic Wikipedia
[x] Chinese Wikipedia
[x] French Wikipedia
[x] Indonesian Wikipedia
[x] Vietnamese Wikipedia
[x] English Wikipedia
- [x] We've tested the feature (in both variants) against a known list of pages that have "challenging" content (complex layouts, mathematical notation, overflow, tables, complex templates, etc). Here are some to check (list in progress):
[x] https://en.wikipedia.org/wiki/Bernoulli_number
[x] https://en.wikipedia.org/wiki/Swan_maiden
[x] https://en.wikipedia.org/wiki/International_Space_Station
[x] https://en.wikipedia.org/wiki/Apollo
[x] https://en.wikipedia.org/wiki/The_Beach_Boys
[x] https://en.wikipedia.org/wiki/Microsoft_Windows_version_history
[x] https://en.wikipedia.org/wiki/Korean_War
[x] https://en.wikipedia.org/wiki/Congress_of_the_Philippines
[x] https://en.wikipedia.org/wiki/List_of_Book_of_Mormon_people ~~⛔ - empty ToC~~ ** - fixed**
[x] https://en.wikipedia.org/wiki/List_of_Dungeons_%26_Dragons_3rd_edition_monsters
[x] https://en.wikipedia.org/wiki/List_of_Dungeons_%26_Dragons_3.5_edition_monsters
==== Accessibility test
- [x] The feature (both variants) has been tested in VoiceOver on iOS and doesn't exhibit any serious new breakages
- [x] The feature (both variants) has been tested for keyboard navigation UX and doesn't exhibit any serious new breakages
==== Patches to backport
[x] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1240770
~~[] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1240796 ~~ **- abandoned**
[x] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1240659
[x] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1240660
[x] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1241034
[] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1242805