gentoo-overlay/app-text/sgmltools-lite/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<!-- maintainer-needed -->
	<use>
		<flag name="jadetex">Add support for <pkg>app-text/jadetex</pkg>
    (for processing tex files produced by the TeX backend of
    Jade)</flag>
	</use>
	<upstream>
		<remote-id type="sourceforge">sgmltools-lite</remote-id>
	</upstream>
</pkgmetadata>