<Tr> <Th_colspan="2"> Overview </Th> </Tr> <Tr> <Th> Production </Th> <Td> November 2017--present </Td> </Tr> <Tr> <Th_colspan="2"> Body and chassis </Th> </Tr> <Tr> <Th> Body style </Th> <Td> 2 - door convertible 2 - door SUV 2 - door SUT 4 - door convertible 4 - door SUV 4 - door SUT </Td> </Tr>

What does jk stand for on jeep wrangler