I am a little bit confused. I want to use odt format for my documents. So, I have to build in a view of my RCP application Writer from OpenOffice. Additional I have to replace placeholders in documents, merge documents, give some users print preview and print possibility.

I've made some research and I've found:
noa, noa4e, OOo SDK, ooeclipse, odftoolkit.

So, which tool is right for me? How can I start (documentation, tutorials, examples)?

Thanks,
Jacek