Translations:/etc/portage/package.use/12/en


 * https://packages.gentoo.org/useflags/ - USE flags on Gentoo Packages Database
 * Portage man page
 * Setting USE_EXPAND flags in package.use - blog post by Bernard Cafarelli
 * Cleaning /etc/portage/package.* from unused entries
 * Find obsolete USE flags in /etc/portage/package.use - Gentoo forums thread