<Table> DISAPPOINTED <Tr> <Th> handshape </Th> <Td> (as for THINK) </Td> </Tr> <Tr> <Th> orientation </Th> <Td> (as for THINK) </Td> </Tr> <Tr> <Th> location </Th> <Td> tip of finger in contact with chin </Td> </Tr> <Tr> <Th> movement </Th> <Td> (as for THINK) </Td> </Tr> </Table> <Tr> <Th> handshape </Th> <Td> (as for THINK) </Td> </Tr> <Tr> <Th> orientation </Th> <Td> (as for THINK) </Td> </Tr> <Tr> <Th> location </Th> <Td> tip of finger in contact with chin </Td> </Tr>

When did sign language become an official language