...TYO TG X/BKK......TG KTM
.....TYO JL O/HKG..........JL SIN
......TYO JL YVR ...../-SFO JL TYO
It flies to Kathmandu via Bangkok by Thai Airways.
X: "Transit" is staying less than 24 hours at transfer airport, and is declared by "X" in front of the airport name in this case.
It flies to Hong Kong by Japan Airlines, and stayed for 2 days there, and goes to Singapore.
O: "Stop Over" is staying more than 24 hours at transfer airport and is declared by "O" in front of the airport name in this case.
It flies from Narita to Vancouver by in Japan Airlines, and moves from Vancouver by car to San Francisco, and returns to Narita after that.
"-" is written in addition in front of an airport, in the case of above.