Grass Valley NewsEdit XT v.5.5 - Manual (Page 280)

Appendix Video Effects
278 Digital News Production
Blur
You use the Blur effect to cover up an image that needs to be protected or
disguised. When you select the Blur effect, the Key Shape effect automatically
turns on. This is because you need the Key Shape effect to select the size, shape,
and position of the blur. You cannot create a Blur effect without using the Key
Shape effect as well.
When covering up an image throughout a clip, you probably have to move the
blur effect several times in order to cover the image as the clip plays. You can
do this quickly using the keyboard keys.
Option Range Description
Defocus 0 to 5 0 is no blur and 5 is the heaviest blur.
O-Soft 0 to 100 0 is no softness and 100 is full softness for the outside region of the shape.