Grass Valley NewsEdit XT v.5.5 - Manual (Page 287)

Effects and What They Do
Digital News Production 285
Mirror Vertical
You use the Mirror Vertical effect either as a standalone effect or within the
Resize or Key Shape effects. This effect flips the image vertically providing an
upside-down view of the image.
The Mirror Vertical effect is either On or Off.
Mirror Horizontal
You use the Mirror Horizontal effect either as a standalone effect or within the
Resize or Key Shape effects. This effect flips the image horizontally providing
a reverse view of the image.
One way to use the Mirror Horizontal effect is to reverse an interview subject
either within a PIP or to change story interviews from one side to the other.
The Mirror Horizontal effect is either On or Off.