Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
You can also hold down the Ctrl key (or Command key on a Mac) while selecting multiple photos.
Source: https://www.devicemag.com/add-27-photos-to-this-sound/