How to get PO Header level attachment?

Hi Gurus,

Need your advise regarding the below:

From the PO header level, I need to get the attached document. This document will be in ms word doc format.

Is the item below possible?

1. Read the attached document and possibility of getting only certain line or words from the document.

2. Get the attached document and output it in a report.

With regards to the above, I'm already aware of the connection of tables to look for the from PO_HEADERS_ALL table down to FND_LOBS table.

Is there any available APIs to process the above? Probably working sample that could walk me through the process.