dev-cpp/xsd
An open-source, cross-platform W3C XML Schema to C++ data binding compiler
USE Flags
doc
Global: Adds extra documentation (API, Javadoc, etc)
examples
Global: Install examples, usually source code
test
Global: Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in make.conf/package.use anymore
zlib
Global: Adds support for zlib (de)compression