memo code for AmountSplit

shouldn't it be an E instead of a M for the memo field of a split in

class AmountSplit(BaseEntry):
    _fields = [
        Field('category', 'string', 'S'),
        Field('to_account', 'reference', 'S'),
        Field('amount', 'float', '$'),
        Field('percent', 'string', '%'),
        Field('address', 'multilinestring', 'A'),
        Field('memo', 'string', '**M**'),
    ]
