AbiWord uses XML as its native file format. See http://www.abisource.com/dev_faq.phtml#2.1
It doesn't look like it has any API or COM interface that would allow to incorporate it in VFP.

>If you are using AbiWord (free word processor available at http://www.abisource.com)and integrating it with VFP I would appreciate any information on how to get started. Somewhere on the Net it is mentioned that this is an XML based product but I cannot find anything about that in the documentation. Thanks.