| A | Expiration date and a carrier's factor may be changed at any time |
| B | Expiration date may be changed at any time |
| C | Expiration date and factor may not be changed before the trigger date, but may be changed after the trigger date |
| D | Expiration date may be changed at any time; carrier may change its factor only prior to the trigger date |
| E | Expiration date may be changed at any time; carrier may change its factor only after the trigger date |
| F | Expiration date may not be changed before the trigger date; it may be changed after the trigger date |
| G | Expiration date may be changed at any time; carrier may change its factor only on number of days advance notice as indicated in the transaction |
| H | Expiration date may be changed only after the number of days advance notice indicated in the transaction |
| I | Expiration date may be changed only after 30 days advance notice |
| L | Date can be changed at any time; the through-rate can be changed at any time by the proposer |
| M | Rate Proposer Only |
| N | Expiration Date and Factor may be Changed Only After the Number of Days Advance Notice Indicated in the Transaction |