It will allow you to type the text you want.
Example
By running this code will set a text "Line 1, Line 2, Line 3, Line 4, Line 5", which will be shown in the Notepad.
This is shown in the Notepad.
plugin command("Apps Automation.dll", "apps automation parent", "Process:notepad|Title:Untitled - Notepad|Class:Notepad", "True") {
plugin command("Apps Automation.dll", "apps automation set text", "/Window|Document:15:Text Editor", "Line 1
Line 2
Line 3
Line 4
Line 5")
}