Use Color Block Select 
to select a block of stitches by thread color.
Note: Multiple color blocks using the same thread color are not selected. If you want to select multiple color blocks, then either change the color order and merge the required color blocks, or perform a ColorSort which will combine identical thread colors into single color blocks where possible.
The block can be moved, scaled and/or resized, mirrored horizontally and vertically and rotated to any degree. The block can be copied or cut to the clipboard and then pasted to the same or another embroidery. The block can also be deleted.
Use Color Block Select
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In the toolbar, click Color Block Select
, then click a visible color on the embroidery. -
Choose Edit > Color Block Select, then click a visible color on the embroidery.
Select an Area with Color Block Select
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In the toolbar, click the Color Block Select button
.
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Click a visible color on the embroidery.
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If you want to make a new selection, click outside the current selection to deselect it. Then click a different color.
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Control–click and select Finish Color Block Select to cancel the Color Block Select tool.
The block is selected according to the visible stitches of the color you clicked.