debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
handbook - Enable handbooks generation for packages by KDE
kde - Add support for software made by KDE, a free software community
ofx - Enable support for importing (and exporting) OFX (Open Financial eXchange) data files
test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
