Translations:Upgrading Gentoo/23/en

Profile updates are executed manually. The way to update may vary significantly from profile to profile; it depends on how deep the modifications introduced in the new profile are. In the simplest case, users only have to use the tool to change the  symlink,  the worst case could be having to recompile the entire system from scratch, with significant reconfiguration (though changes are usually not too hard, and are well explained - the main thing to remember is to properly follow the instructions).