Determining whether features should be included at the operating system (OS) level or the application level requires careful consideration of a number of factors. At a high level, features that are essential to the functioning of the device or system should be included at the OS level. For example, drivers for hardware components such as graphics cards or network adapters should be included at the OS level to ensure compatibility and optimal performance. Features that are specific to a particular application, on the other hand, should be included at the application level. For example, a word processing application may have features such as spell checking or document templates that are not essential to the functioning of the overall system, but are important for the functionality of the application itself. There are, however, many cases where the decision is not so clear-cut. In these cases, it is important to weigh the benefits and drawbacks of each approach. Including a feature at the OS level can provide a more consistent and integrated user experience, but can also increase the complexity of the system and make it more difficult to maintain. Including a feature at the application level can make the application more lightweight and easier to maintain, but can also result in a less consistent user experience across different applications. Ultimately, the decision of whether to include a feature at the OS level or the application level should be based on a careful evaluation of the specific feature, its importance to the overall system, and the trade-offs involved in each approach.