This example creates a single localized label in French. The fallback language is English.
<?xml version="1.0" ?>
<contexts>
<locale>fr-FR</locale>
<context>
<comment>Internationalized messages</comment>
<label>
<id>Localization.my_label</id>
<comment>Internationalized message</comment>
<translation>
<fallback>This is my fallback message</fallback>
<custom>Voici mon message traduit en français</custom>
</translation>
</label>
</context>
</contexts>