When viewing what CTE visuals? Where do we place the cue before pivoting? Parallel to what line?
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I edited but since you saw my post before I edited I will answer.

Once the visuals are obtained in manual cte the user is suppose to focus on the cueball and dropmstraight in with 1/2 tip of parallell english. From there you pivot to center.
To answer your question mlre precisely... Once you are focused on the cueball you could imagine two parallell lines touching the edges of the cueball. Your line dropping in would be parrallell to those 1/2 tip away from center. Then pivot to center.