A poster helpfully uploaded a copy of a guide provided by American Express. I have removed it because the document is copyrighted.
Here is Flyertalk's policy:
Do not post information protected by copyright or owned by another without the owner's consent. If you infringe on someone else's rights you will be held solely responsible. Neither FlyerTalk nor its owner shall be held responsible for information you post that may violate copyright law.
When posting a news article or other published information, credit the source of the information and give a brief, one-to-three paragraph summary or clip of the content, providing an appropriate link and/or cite to its source.
FlyerTalk's Infringement Policy, found in its Legal Notices disclosure, is made a part of this rule and nothing in this rule is meant to conflict with that Infringement Policy.
I will see if I can devise a solution that will satisfy the policy.