Between the icon "Send selection to..." and the icon "Open the file", there is a space for "Open folder", but there is no icon for it...
By the way, the "Open the file" icon is a bit disturbing because it looks like a "Print" icon.
Beta 2.10 compiled from git sources on Wed April 10
I guess there is no icon set for the "Open folder" action - the look and feel we use will align the text regardless of whether all actions have icons.
Good point about the "Open file" icon - we should probably replace it...
Related: bug #1192
Closed as the button has been removed in the IconBar for the next release 3.0.
(The "Open File" icon will get a more intuitive look, too)