press start (or E) to generate a random word click the cat (or press space) to hear the pronunciation again click "+" to add one letter to the word click "-" to remove the last letter of the word click "add word" to add the word to the sentence click "say sentence" for it to say the sentence
the length of the word can only be in between 1 and 50 characters (starts at between 4 and 12). sometimes it will pronounce the word and other times it will just pronounce the letters.