\TrackLangProvidesResource{en-US}[2016/10/06 v1.2] \providecommand*{\enUSanimals}{% \englishanimals \renewcommand*{\ladybirdname}{ladybug}% } \TrackLangRequireResourceOrDo{english} { \TrackLangAddToCaptions{% \renewcommand*{\ladybirdname}{ladybird}% } } { \TrackLangAddToCaptions\enUSanimals }