What does generating content do?

It writes a word's supporting material for you — its meaning, example sentences and the rest — from the word and its translation, so you do not have to type them.

It runs in the background: the row shows as generating and fills itself in when it is done. You can carry on working meanwhile.

Each run costs one AI credit. A list can also be set to do this automatically for every new word, in the list's settings.