Routing rules answers depends on the travel
For exemple,
TPE-EZE (with AF)
ROUTING 4500 FROM-TO TPE-HX/AE/KA/CX/CI-HKG-AMS-PAR-BUE*
FROM-TO TPE-HX/AE/KA/CX/CI-HKG-PAR-AMS-BUE*
FROM-TO TPE-HX/AE/KA/CX/CI-HKG-AMS-PAR-SAO/
RIO-AF/JJ/G3-BUE*
FROM-TO TPE-HX/AE/KA/CX/CI-HKG-PAR-AMS-SAO/
RIO-AF/JJ/G3-BUE*

But for TPE-HNL (with AF)
ROUTING MPM MPM TRVL PERMITTED

Of course on other compagnies, like CO, the routing is given by the pacific way (the shortest) but not interesting for MR addicted

I read on another post (don't remember where) that routing is either discribed as above or indicated by MPM...
What about this?