| http://www.w3.org/ns/prov#value | - The method as claimed in claim 1, wherein the laser beam is a focused laser beam having a focus and a focal area at said focus, and wherein the focus of the laser beam focus is situated at such a distance from the surface of the sheet to be machined that the irradiation area of the laser on the surface exceeds the focal area thereof by at least 50 percent.
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