Description: GENTOO_CUSTOMIZATION refers to the various customization options available for users of Gentoo, a Linux distribution known for its focus on flexibility and control. Gentoo allows users to tailor their operating system to their specific needs, from package selection to environment configuration. This customization is achieved through a package management system called Portage, which enables software compilation from source code, thus optimizing system performance and functionality. Users can choose which features to include in their applications, resulting in a highly optimized system tailored to their preferences. Additionally, Gentoo offers the ability to customize the Linux kernel, allowing users to select the drivers and features they want to include, further enhancing system efficiency. This customization capability is not only useful for advanced users looking to maximize performance but also allows beginners to learn about the inner workings of Linux and how operating systems are built. In summary, GENTOO_CUSTOMIZATION is a fundamental aspect of the Gentoo experience, providing users with unprecedented control over their computing environment.