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Click the Settings/Pen & Color Settings line in the classic menu , and the Settings/ Element Properties Settings/Pen and Color Settings icon in the ribbon menu .
The Pen and Color Settings dialog will be displayed.
On the left side of the dialog is a list showing the item numbers and their corresponding pen thicknesses. The values in the thickness column are in millimeters and can be changed. To change the values, click on the relevant cell with the left mouse button and enter the new value.
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