'Tells the converter to only output the parts inside the <body>'

def set_embedable(self):

    self.elements[(OFFICENS, 'text')] = (None, None)
    self.elements[(OFFICENS, 'spreadsheet')] = (None, None)
    self.elements[(OFFICENS, 'presentation')] = (None, None)
    self.elements[(OFFICENS, 'document-content')] = (None, None)
