Handling electronic attachments in CV03N (GOS)

Hi!

In a 4.6C SAP R/3 system we are using the DMS module. There are many electronic documents (like MS Word, MS Excel, etc) attached to a lot of DMS documents with CV01n or CV02N, using the GOS (Generic Object Services).

I would like to know, where are these documents stored, and how can I download, delete, modify them from an ABAP program?

I think there is a link to these files and the file itself, I'm interested in both.

See the images for details:

http://tinypic.com/r/2h3yf0l/5

http://tinypic.com/r/29c54le/5

Thank you

Tamás.