Pulled the following from expedia.com
HJWAP (JFK-HKG)

A portion of it reads:

SURCHARGES - ANY AQ FLIGHT /ANY UA FLIGHT / ANY HA FLIGHT
25.00 USD SIDE TRIP
FROM HONG KONG SAR 20 HKD MISC/OTHER

What does this mean? $25 for a side trip form HKG on any AQ, UA, or HA flight?

What about this portion?
MPM - PA 9817 VIA PACIFIC

And finally, how do you read the routing? Do that mean I can route JFK-LAX-HNL-NRT-HKG?

INDUSTRY FARE TYPE - XPB - SUPER/SPECIAL INSTANT PURCHASE
PFCS MAY VARY BY RTG
ROUTING 469 FROM NYC-UA-CHI-UA-DEN-
VIA UA-LAX-UA-SFO-UA-SEA-
OR VIA UA-SFO-UA-LAX-
OR VIA UA-SEA-
TO UA-HNL-UA-OSA-UA-TYO-UA-HKG*

Thanks.