<Tr> <Th> Audio format </Th> <Td> Mono (1973--87) Stereo (1987--present) </Td> </Tr> <Tr> <Th> Original release </Th> <Td> March 26, 1973 (1973 - 03 - 26)--present (present) </Td> </Tr> <Tr> <Th_colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Related shows </Th> <Td> <Ul> <Li> As the World Turns </Li> <Li> The Bold and the Beautiful </Li> </Ul> </Td> </Tr>

When did the bold and the beautiful air