Kid 0 - XuiTextArea
"TextEvent" callback from every KeyDown
"Selection" callback from every KeyDown of Escape key
Kid 1 - XuiArea
Kid 2 - XuiScrollBarV
Kid 3 - XuiScrollBarH

XuiTextArea grids display a string array and accept user input text. Enter keystrokes at any character position move all following lines down a line.

Though text is displayed in kid #1, all normal messages should be sent to the XuiTextArea grid itself, as it manages the text and scroll bars.