Originally Posted by
3Cforme
There is no single 'B fare rule.' The is fare rule B......... that books into B inventory between city pair xxx and yyy purchased in country zz.
Hyperlinks at purchase (at least for DL-operated segments) are commonly available to Detailed Fare Rules. The really well organized traveler will save these rules.
thanks, will try to ask in recent MSP-Wenatchee thread, maybe somebody can share