Markable Objects: Those objects you find in various locations that you right-click on and Mark. "Arremis was here." I don't know if this has been addressed yet.
Water Objects: We've discussed this before, but I thought I would note that as I was running around in the Queen's Colony on Live, I was harvesting some nodes in the lake by the treehouse, and noticed that as I was only waist deep in water, as I moved, my Swimming skill kept going up. It seems that the client knows the difference from when a character is on land to when they pass into the perimeter of a water object, and obviously knows when the character is completely within the dimensions of the water object. I'm