allthough -first of all- I didn't notice that there shall be
something like a GUI, I indeed later on found the
screenshot on your page showing the IO Designer.
Now I wanted to use this, but it doesn't show up. Neither
on hitting F6 nor selecting it via the menu.
And what I wanted to tell you by the introduction is that I
never touched that thingy in any way, I initially didn't even
noticed that it's (shall be) there.