Vienna is an excellent rss reader, but it’s not perfect. One of my biggest complaints is it’s lack of a hot key to toggle the display filtering of the articles. There are a variety of methods to assign key combinations to various application and desktop functions, but my preferred method is Quicksilver triggers.

Assign this applescript to a trigger, and you will then be able to use a key combo to cycle thru the 4 filter modes: All Articles, Unread Articles, Last Refresh, and Today. The script cycles thru the 4 modes in order.

 tell application "Vienna"

    set x to (get filter by)

    — set to Unread Articles, if showing All

    if (x = 0) then

        set filter by to 1

    — set to Last Refresh, if showing Unread Articles

    else if (x = 1) then

        set filter by to 2

    — set to Today, if showing Last Refresh

    else if (x = 2) then

        set filter by to 3

    — set to All Articles if showing Today

    else if (x = 3) then

        set filter by to 0

    end if

end tell