In this book, interdiction, constraint, and pre-emption are legally codified where interdiction consists of prohibiting any particular person from dealing with his own property; Constraint consists of wrongfully forcing a person through fear to do something without his consent. Pre-emption consists of acquiring possession of property which has been purchased, by paying the purchaser what he paid for it.
In this book, interdiction, constraint, and pre-emption are legally defined: interdiction is prohibiting a person from dealing with their own property; Constraint involves wrongfully compelling someone against their will. Pre-emption means taking possession of purchased property by paying the original seller what was paid for it.