Thread:Translating talk:OpenStreetMap/Use of zero in Plural on OSM

In the message Layouts.inbox%20tooltip the English plural uses 'zero' as well as 'one' and 'other'. In the documentation for CLDR however there are only 2 forms listed for English, 'one' and 'other'.

Has an additional form 'zero' been added for English only or can the form 'zero' be used for all other languages, even when 'zero' is not listed for that language on CLDR?.

On CLDR they say: "There are two extra values that can be used with count attributes: 0 and 1. These are used for the explicit values, and may or may not be the same as the forms for "zero" and "one"." Is this the case for OSM?