The Y axis value of a pixel position on the screen.
The first row of pixels at the top of the screen is at 0 on the Y axis.
Child of: <bar>, <button>, <button_defaults>, <dropdown>, <graphical_button name="">, <image name="">, <input>, <media_overlay>, <text_banner name="">, <title>, <title_defaults>, <video_defaults>
Parent of: Nothing
Example: