OFB Click "Edit" button bar lower RH corner. Click on the white dot in the msg "deletion options" window. Then click on the "delete this msg" bar in the lower RH corner.
I had the same problem some time ago as I failed to see the bottom of the "deletion options" window.
I wonder what your posting problem was as I love to see your river pics.
This was also an experiment to see what happened when you used the "quick reply" option. Only difference I see is that the final msg is a bit smaller.
North Western Washington State USA