How do you use word helper when playing "Scrabble"?

Use WordHelper.org to play Scrabble by entering tiles on line one, entering an existing word to attach a new word to on line two (if applicable), choosing a dictionary on line three and clicking "go" on line four. WordHelper then returns a list of possible words.

Each word in the WordHelper list of Scrabble words is followed by the point total in parentheses. The list includes stand-alone words and words that work with the existing word. These can be put next to the existing word, extend the existing word or cross with one of the letters of the existing word. There is a list for each letter with which the new word might cross the existing word.