gentoo-overlay/app-mobilephone/yaps/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>mobile-phone</herd>
<longdescription lang="en">
  Yet Another Pager Software (optional with CAPI support).
</longdescription>
<use>
  <flag name='capi'>Enable CAPI support</flag>
</use>
</pkgmetadata>