First you see the fretboard - then the amber vertical bars appear at the open strings, the 5th, 10th, 12th, and 17th frets showing the axis positions; the fret positions which comprise natural tones on each string.

Then the image zooms in on the span from the open strings to the 10th fret.

Finally the half-step clusters appear in the upper strings and then the lower strings. The notes B, C, E and F are shown because their positions serve as essential landmarks.