<Tr> <Td> zwnj </Td> <Td> </Td> <Td> U + 200C (8204) </Td> <Td> HTML 4.0 </Td> <Td> HTMLspecial </Td> <Td> NEW RFC 2070 </Td> <Td> zero - width non-joiner </Td> </Tr> <Tr> <Td> zwj </Td> <Td> </Td> <Td> U + 200D (8205) </Td> <Td> HTML 4.0 </Td> <Td> HTMLspecial </Td> <Td> NEW RFC 2070 </Td> <Td> zero - width joiner </Td> </Tr> <Tr> <Td> lrm </Td> <Td> </Td> <Td> U + 200E (8206) </Td> <Td> HTML 4.0 </Td> <Td> HTMLspecial </Td> <Td> NEW RFC 2070 </Td> <Td> left - to - right mark </Td> </Tr> <Tr> <Td> rlm </Td> <Td> </Td> <Td> U + 200F (8207) </Td> <Td> HTML 4.0 </Td> <Td> HTMLspecial </Td> <Td> NEW RFC 2070 </Td> <Td> right - to - left mark </Td> </Tr>

What is the character for escape string in dtd