A Musical Riddle

I came across this chart today while sifting through some old scores. It was tucked away in “Lush”, a piece I composed for soprano saxophone, and jazz chamber orchestra.

I don’t know what it means. Is it something to do with the chord voicing or editing a recording? The words spell out “top” and “bottom”, and the numbers are 1, 2, and 3. The circles represent anchor points. They are grouped in triangles (three circles), except for the top right section.

How do I recover this information? Goodbye sleep.