gentoo-overlay/sci-mathematics/calc/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>sci-mathematics</herd>
<longdescription lang='en'>
  Calc is an interactive calculator which provides for easy large
  numeric calculations, but which also can be easily programmed for
  difficult or long calculations. It can accept a command line argument,
  in which case it executes that single command and exits. Otherwise, it
  enters interactive mode.
</longdescription>
</pkgmetadata>