Hi Antonio,
It is very easy to add languages, merge, etc, but I do not find how to delete one of them.
If your question is about a word, there is a button named "remove". If the question is about a language, there is no UI but you can do it:
NaturalLanguageTranslator removeLocaleID: (LocaleID isoString: 'tlh')
This mixed use can create problems to me?
translations will be OUT of the image file? etoys-dev-2.2.image has translations inside or they are only at squeak/po/subdirectories? I can load german language by menu but I have not any *.de at my squeak/po/subdirectories, so I'm confusing.
Now we use NaturalLanguageTranslator only for internal use. It will be replaced more gettext compatible way. Meanwhile, you can use the language editor, but I recommend to get used to gettext tools. Now translation data is in the image as a cache. So you don't need external po file. But this behavior might be changed.
About Babel (Preferences... menu), which is the diference between /translationWithBabel/ activated or not?
Babel is old name of NaturalLanguageTranslator. This preference is no more used. Thanks for informing about it.
Cheers, - Takashi