I heard Ted mention something similar to this once before.
I spoke to John Fey, first authorized instructor from Indiana, who was in Mr. Kelley's PGA Teaching workshop in Albuquerque, N. Mexico in March of 1980. He relayed the following to me.
Mr. Kelley had his early classes use three high-lighters:
Yellow-Highlight what applies to both Swinging and Hitting.
Pink-Highlight that which applies to Swinging.
Green-Highlight that which applies to Hitting.
Why he used pink for Swingers I am sure is up for debate.
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