Comment installer de nouvelles polices ?

Voici une piste : https://discussions.apple.com/thread/4082373

Download new fonts from the Internet (e.g. 1001fonts.com), and then open the file once downloaded. This will launch the application FontBook. It will ask "Install the font?" Click "OK", and you will be able to use the new font in Pages, TextEdit or other word processors. (You may have to re-start the application for it to recognize it.)

Bonus info: pressing command–t in many applications opens you computer's font control panel.

1. Installation et suppression de polices sur votre Mac - Assistance Apple
2. redémarrer le mac

alors voir Apple si elle connait une autre méthode 🙂

Bonne chance !

Je vous en prie 🙂

bonne soirée !