def all(self):
found = False<EOL>s = []<EOL>for display in self.list:<EOL><INDENT>if not found:<EOL><INDENT>s.append("""<STR_LIT>""")<EOL>found = True<EOL>pass<EOL><DEDENT>s.append(display.format())<EOL><DEDENT>return s<EOL>
List all display items; return 0 if none