Is it possible to export the discussion information in an ascii format for using it externally ?
Do you mean the comments attached to a document in the Share view?
When I said Discussions, I was speaking about the forums tag as Discussions.
Is it possible to get all last themes of discussion with all comments in an ascii file ?
Sure, there are a couple ways you could do that. The Discussions component in Alfresco Share provides an RSS Feed, which will give you an XML representation of the topics and comments.
Retrieving data ...