#contract rider
- Addendum — An additional document, annex, or written supplement attached to an existing contract, treaty, literary work, or set of technical specifications. This structural element is used to add essential information, clarifications, corrections, or official modifications, without requiring the complete rewriting of the main baseline document.
- Addendum — A supplementary act or element added to a pre-existing text, contract, treaty, or legal structure to complete, modify, or extend it; in a technical or general sense, it represents the addition of a part or a substance into an assembly, often functioning as a specialized synonym for addition.