Ordering search results

[jimll]

I know that by clicking on column headings I can change the order of the search results (indicated by either an up or down arrow in the column header).

But.... how do I cancel ordering on a column (without selecting ordering another column).

Each click on the column header changes the order of the search (ascending / descending). Sometimes though, I have noticed that if I let the mouse cursor linger after clicking, the ordering arrow disappears - this is what I want! But what is the method, I'm sure it's not just random!!

This has been bugging me for months, so any help VERY much appreciated!!

Thanks, Dave.