Hon can I sort a large folder of files by the file extension
Set SORTBY=+ext
Another way if you don't want to make a button/hotkey:
If you hold shift and click the "Name" heading at the top of the Name column, so that the arrow points right instead of up/down, Opus will then sort by extension.
(A third way is to add the Extension column and sort by it normally, by clicking its heading.)
Tip of the day. I didn't know about that
I knew that Opus would have a way to do this, just as it has a way to do "everything".
Thanks for the replies