gentoo-overlay/gnome-extra/nm-applet/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>gnome</herd>
	<use>
		<flag name="gconf">Build tool for migrating gconf settings from
			nm-applet-0.8.x</flag>
		<flag name="modemmanager">Enable support for mobile broadband devices
			using <pkg>net-misc/modemmanager</pkg></flag>
	</use>
</pkgmetadata>