如果目标区域与源区域不相交，则使用当前前景色和背景色将源区域填充为空白。

If the destination area does not intersect the source area, the source area is filled with blanks using the current foreground and background colors.

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可以设置前景色或背景色、用颜色填充限定区域或在图像上选择一种颜色作为当前前景色或背景色。

You can set a foreground or background color, fill bounded areas with color, or select a color on an image to use as the current foreground or background color.

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前景色因“设置”对话框中当前所设临界值而不对这种背景色补漏白。

The foreground object does not trap this background color because of the threshold settings currently set in the preferences dialog box .

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