This example show how disable the keyboard
input while a text is scrolling and enable 
newly the input when the scrolling has 
been completed.

Try now to hit some key
you'll see that no keyboard command
works in this moment.

To reach this target just using the new 
global trigger:
GT_VSCROLL_COMPLETE
The trigger in the level starts the scrolling 
text and in same time disable forever the 
keyboard input, while a GlobalTrigger command 
in script.txt will enable newly the keyboard 
input when the scrolling text is complete.