Reversion

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[edit] Law

Property law
Part of the common law series
Acquisition of property
Gift  · Adverse possession  · Deed
Lost, mislaid, and abandoned property
Bailment  · Licence
Estates in land
Allodial title  · Fee simple
Life estate  · Fee tail  · Future interest
Concurrent estate  · Leasehold estate
Condominiums
Conveyancing of interests in land
Bona fide purchaser  · Torrens title
Estoppel by deed  · Quitclaim deed
Mortgage  · Equitable conversion
Action to quiet title
Limiting control over future use
Restraint on alienation
Rule against perpetuities
Rule in Shelley's Case
Doctrine of worthier title
Nonpossessory interest in land
Easement  · Profit
Covenant running with the land
Equitable servitude
Related topics
Fixtures  · Waste  · Partition
Riparian water rights
Lateral and subjacent support
Assignment  · Nemo dat
Other areas of the common law
Contract law  · Tort law
Wills and trusts
Criminal Law  · Evidence

In law, a reversion is an agreement such that one party takes ownership of a piece of property from another under the understanding that the ownership will revert to the second party when an agreed event occurs.

The most common form of reversion agreement is for one person to allow another to own a house until their death, upon which time it reverts to reversion holder.

Reversions themselves can be thought of as a form of derivative in which the underlying asset is a piece of property rather than a more usual financial instrument. Reversions can thus themselves be bought and sold.

[edit] Evolution

In evolution, reversion is the return of a character to one of its previous ancestral state. Reversion are quite commonly observed within DNA. The existence of reversion refutes Dollo's law a 19th century theory that evolution cannot retun to a prior form of an organism.

[edit] Software and content development

Main article: Reversion (software development)

Reversion or reverting is the return to a previous instantiation of a piece of software, saved database state, web page, wiki article, or other piece or set of digital content or data.

[edit] Television production

In television production, the word may refer to the process of reversioning (or re-versioning, thus re-version): the relatively recent phenomenon of recycling pre-existing productions, even entire series, into "new" shows. Completed TV shows that have already aired are re-edited or supplied with new voice-over, graphics or music, and then aired with a new title, often for a new audience. Sometimes the changes are relatively minor, as in the case of Prehistoric Planet, which was made from the original series Walking with Dinosaurs.

An example of a reversioned film is Woody Allen's What's Up, Tiger Lily?, in which the director wrote new English dialogue for the Japanese film International Secret Police: Key of Keys for comic effect.