Files only-Image View - how to exclude a folder?

I have a folder with sub folders
then select image-tab and then "show files only":

Set FLATVIEW=On,Grouped

Is there a way to exclude a specific sub folder ?

Example, there are 10 sub folders, sub folder1, sub folder2, etc.
I then want to exclude sub folder1 from being displayed and only 2, 3 etc. should be displayed.


Try a hide filter.!Documents/Set.htm

Thanks. From the Opus Explorer interface I mean. The "Show Files Only"above is a toolbar button.
So, select folder, select Image tab, click on Show Files Only, then all images are displayed.
Now from that point I'd like to hide a folder.
Likely it is not possible though..