Journal of the Society for Information Display.
An amazing technique to learn to master this partition is to take a mental break throughout the day and step away from the screen for an hour or two.
The capacitors and diodes serve as a for the current delivered by the flyback.
More specifically, the convergence at the center of the screen with no deflection field applied by the yoke is called static convergence, and the convergence over the rest of the screen area specially at the edges and corners is called dynamic convergence.