Modification techniques refer to methods used to alter or enhance the properties of materials, processes, or systems. These techniques can include physical changes, such as altering the shape or size of a material, or chemical changes, like adding additives to improve performance. Common applications are found in fields like materials science, engineering, and pharmaceuticals. In the context of software development, modification techniques can involve adjusting code to improve functionality or user experience. This can include refactoring, which reorganizes existing code for better efficiency, or adding new features to meet user needs. These techniques help ensure that products remain relevant and effective over time.