This vocabulary feature includes functions to edit words that you have added, and review words that you have deleted. The options from the main vocabulary screen's menu are:
Number Match: look-up a word by entering corresponding key numbers.
Word Lookup: look-up a word, entered letter-by-letter.
All added: review the list of all the words that you have added to the vocabulary.
All preferred: review your list of most used (preferred) words.
All deleted: review the list of words that you have deleted from the vocabulary.