Draw Next Color Block 
steps through the color blocks one at a time in the order shown in the Color Select area. Only one color is visible at a time. All the other colors are automatically hidden (unchecked). The work area displays only the stitches in the visible color block.
Note: The Draw Range shows the Start and End stitches of the color block and the sliders move as each color is selected.
To show the next color block
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Click the Draw Next Color Block
button in the Control Strip.
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Choose Filter > Draw Next Color Block.
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Press ⌘]