MDG_Lang
explanations
examples
Abstract given in english (default) and an addtional language (dutch)
<gmd:abstract xsi:type="gmd:PT_FreeText_PropertyType">
<gco:CharacterString>English description</gco:CharacterString>
<gmd:PT_FreeText>
<gmd:textGroup>
<gmd:LocalisedCharacterString locale="#DUT">Nederlandse omschrijving </gmd:LocalisedCharacterString>
</gmd:textGroup>
</gmd:PT_FreeText>
</gmd:abstract>