gentoo-overlay/dev-ruby/rbtree/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="project">
	<email>ruby@gentoo.org</email>
	<name>Gentoo Ruby Project</name>
</maintainer>
<longdescription lang="en">
RBTree is a sorted associative collection that is implemented with Red-Black Tree. The elements of RBTree are ordered and its interface is the almost same as Hash, so simply you can consider RBTree sorted Hash.
</longdescription>
</pkgmetadata>