The Experimental folder's rail rows were the one part of the gallery's own
chrome still in English in every locale. They were also machine-titleized
manifest ids, so even English read "Upg Neighbor".
The six Experimental bundles known today now have proper rail names in all
11 locales (Prayer Walk Planner, UPG Neighbor, Key Cities, All People
Groups, Country Posters, Doxa Vision Card). A future bundle that isn't
listed still appears, under its manifest title. Outside English its
English manifest description is replaced by the translated generic
subtitle.
Measured on the served built tree with the folder opened (7 → 12 rows):
translated in it/de/hi/ru/ar, en "UPG Neighbor", and 0 clipped. The rail
clip sweep with the folder open (11 locales × 1400/390) is 22/22 clean.
check:spa-tab-order passes on my own served tree. check:gallery-embed:
js 13, iframe 13, neighbour 13, linked 4.