Function tr
Performs the string translation for a statically given language.
string tr(CTX, string LANG)
(
string key,
string context = null
);
string tr(CTX, string LANG)
(
string key,
string key_plural,
int n,
string context = null
);
The second overload takes a plural form and a number to select from a set of translations based on the plural forms of the target language.