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TO ALTER. To change. Alterations are made either in the contract itself, or in the instrument which is evidence of it. The contract may at any time be altered with the consent of the parties, and the alteration may be either in writing or not in writing.
     2. It is a general rule that the terms of a contract under seal, cannot be changed by a parol agreement. Cooke, 500; 3 Blackf. R. 353; 4 Bibb. 1. But it has been decided that an alteration of a contract by specialty, made by parol, makes it all parol. 2 Watts, 451; 1 Wash. R. 170; 4 Cowen, 564; 3 Harr. & John. 438; 9 Pick. 298; 1 East, R. 619; but see 3 S.& R. 579.
     3. When the contract is, in writing, but not under seal, it may be varied by parol, and the whole will make but one agreement. 9 Cowen, 115; 5.N. H. Rep. 99; 6 Harr. & John, 38; 18 John. 420; 1 John. Cas. 22; 5 Cowen, 606; Pet. C. C. R. 221; 1 Fairf. 414.
     4. When the contract is evidenced by a specialty, and it is altered by parol, the whole will be considered as a parol agreement. 2 Watt 451; 9 Pick. 298. For alteration of instruments see Erasure; Interlineation. See, generally, 7 Greenl. 76, 121, 394; 15 John. 200; 2 Penna. R. 454.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
Stoltzfus states that Gide is aware of alterability, difference, and marginality (7) (his Immoraliste fits into two Orientalist categories: the accumulation of knowledge about the region and sexual freedom, exploring the opposition between the values of Europe and the values of the Orient).
One of the most important premises of the book is build upon the thinking of Marc Auge who considers "the contemporary ritual activity as a profane formula to harmonize identity and alterability, two notions that have always caused problems at social level.
In Hertzka's work, empty space is described as a possibility for another order of meaning and with potential for cultural alterability. Progress is expressed quantitatively in numbers, with scientifically measured space, plans for economic growth, and urban development.
This alterability factor is of particular relevance for the speech-language and behavior analysis practitioner whose goal is to establish, change, or correct language behavior.
What steps do you recommend to minimize the risks of alterability of records and to avoid potential legal challenges?