NewTek TriCaster 8000 - Manual (Page 254)

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FIGURE 229
Now would be a good time to test the effect of the Scale, Rotation, and Aspect
controls in the Tracker tab for DDR 1 (remember you can double-click the DDR 1
monitor to open this panel).
U TILITIES
Effects can take other forms as well. We’ve looked into the
Default effects group; now let’s consider Utility effects.
If you were following along in the previous section, replace the
current effect in M/E 1 with the Show Alpha effect from the
Utilities group.
Applying this effect immediately causes the display on the Program monitor update,
showing the content of the alpha channel for input A (Input B is ignored).
The current input A source is keyed, so the effect displays black on Program out
reveals wherever transparency exists in the foreground, white for full opacity, and
shades of gray for in-between blends.
FIGURE 230