Sorry I was using the term from Newsleecher.
The Clean/Clean up, button "clears" the contents of an open tab, everything showing is removed.
It's only a small thing, but useful to clear anything left in a tab after downloading, or to get rid of anything you no longer want.
I know getting to grips with a new program there is always something you miss.
I'm really pleased with NewsbinPro though and have spent hours working through all of the options and I'm here to stay
Edit: I see that a right click offers a "Clear List".
I can adapt to that