List section tables.

def listTables(self,walkTrace=tuple(),case=None,element=None):
        """List section tables.
        """
        if case == 'sectionmain': print(walkTrace,self.title)
        if case == 'table':
            caption,tab = element
            try:
                print(walkTrace,tab._leopardref,caption)
            except AttributeError:
                tab._leopardref = next(self._reportSection._tabnr)
                print(walkTrace,tab._leopardref,caption)