well I just discovered this myself and thought I share.
you CAN USE mousex("layer 2") to retrieve mouse position on [u:1kuqllle]"layer 2" LAYER![/u:1kuqllle]
thinking about layer zoom now?
anyway, I wonder how many features there are that people don't know about (like right clicking the color square when making an event to change color filter, where you can enter numeric values even from private/global variables) can I get a list of them?