def addword(word):
    """Adds word to the dictionary."""
    pass

def removeword(word):
    """Removes word from the dictionary."""
    pass

def findword(word):
    """Finds word in the dictionary."""
    pass

def loadDictionary(filename):
    """Loads dictionary from filename."""
    pass

def parseWords(wordstring):
    """Returns a list of word strings, from the wordstring chunk."""
    return wordstring.split()

def checkspelling(word):
    """Checks the spelling of ONE word. -- and returns word or None"""
    file = open('dict.txt')
    for line in file:
        if word.lower() = line:
            return word
        elif word = line:
            return word
    return None

def checkchunk(wordstring):
    """Returns a list of words that have been verified against dictionary"""
    pass