When GN4 finds a possible spelling or punctuation error, but the term is indeed correct, and you want to add it to the dictionary, do one of the following:

•To add your changes to the language specific dictionary, click Add. lang.

•To add your changes to the common dictionary (for all languages), click Add.

It is not possible to write a word in the Spelling error dialog box and to add it to the dictionary. Please be aware that if you type a correction, and click Add, or Add.lang, the original, and not the corrected word is added to the dictionary!