Use Linetype manager to change the scale factor of linetypes for all objects in a drawing. Changing the linetype scale factor causes the drawing to be regenerated.
Go to Format menu, click on Linetype, it will display a popup window from where you can change the scale factor.
Global scale factor: Sets a global scale factor for all line types.
Current object scale: Sets the scale factor for line types for newly created objects. The scale is a multiplication of the global scale and the current scale.
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