Tektronix Grass Valley 3000 - Manual (Page 254)

B-14
Appendix B — Keyframe Facts
With the bias set to 1.00, the path is pulled towards the previous
keyframe. Entrance and exit to the keyframe are on a straight line
from the previous keyframe (see Example 8), and the path of the
effect travels completely through KF2 before turning towards
KF3.
Example 8
Bias = 1.0
KF1
KF2
KF3
Entry Bias
Tension Vector
+
-