Marking words as known
If I click on a word in my vocabulary, I can mark most of them as known so I don't get them to practice anymore. However, the words that I know best and that I definitely won't forget anymore don't show that option. Please, I really would like to get words like apple and dog out of my training shedule. With about 750 words, it can't be that hard to genreate training sentences without them?