The tooltips arrived with their strings in en-US and ru-RU only, which would
have left the hint layer half English in thirty-two languages. The same
twenty-four keys are now in all of them.
Each locale follows its own file: the word it already uses for board, card,
list and project, its register, and its own key order. Where a locale's
existing wording for a neighbouring key is wrong, the new strings use the
correct form rather than repeating the mistake, and the mistake is left for a
separate pass.