Zend_Translate - choosing the best format

Hi,

What is the best format for storing translations(form labels, validation errors, html fragments)?
I have tested CSV, but it seems hard for maintenance, especially for complex html fragments.

http://framework.zend.com/manual/en/zend.translate.adapter.html

I would suggest to either use the ini or gettext adapter. For small projects, ini is probably the easiest, but gettext is more expandable and will support more characters.