Open the link to the full article (as contained in the current
headline) in your web browser newsticker-treeview-browse-url).
You can force immediate download of news with the following commands.
Get news for currently shown feed (newsticker-treeview-get-news).
Get news for all feeds (newsticker-get-all-news).
The command newsticker-add-url prompts for an URL and a name of
a new feed. It then prepares a customization buffer where the details
of the new feed can be set.