TextEdit elements cannot appear in Overlay scenes.
This is the initial text to show in the element, with any variables replaced.
Note that if Text contains a variable, any changes in the variable value once the element have been shown will not be reflected in the visible contents of the text box. The reason for this limitation is that the user can change the text box contents by typing at any time so it is not possible to track where the variable contents should be, or even if they are still there at all.