Spread the Image
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Menu -> Image -> Spread

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Horizontal repeat and Vertical repeat
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You can fill the image background or the selected layer with their
repeated contents by setting a value for Horizontal repeat and
Vertical repeat. The bitmap inside the selected layer or image
background is repeated horizontally and/or vertically.
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Note
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Resize the selected layer if necessary before applying this tool.
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Undo / Redo
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Use this button to compare results.
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You can press the F11 key to show the image in Full Screen Edit
mode.

Original
image.-
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Result
of the Spread tool. -
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