<xliff xmlns="urn:oasis:names:tc:xliff:document:2.0"
version="2.0" srcLang="en-US" trgLang="ja-JP">
<file id="f1" original="Graphic Example.psd">
<skeleton href="Graphic Example.psd.skl"/>
<group id="1">
<unit id="1">
<segment>
<source>foo</source>
<target>XLIFF 文書を編集、または処理 するアプリケーションです。</target>
</segment>
</unit>
</group>
</file>
</xliff>
<?xml version="1.0"?>
<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2">
<file source-language="en" datatype="plaintext" original="file.ext">
<body>
<trans-unit id="1">
<source>Symfony is great xliff</source>
<target>J'aime Symfony</target>
</trans-unit>
</body>
</file>
</xliff>
http://symfony.com/blog/new-in-symfony-2-8-translator-improvements
specification
http://docs.oasis-open.org/xliff/xliff-core/v2.0/xliff-core-v2.0.html
new
supported