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Round the corner of Patterns and Internal Shapes.
 

1. Click   Smooth Curve in the 2D toolbar.  
    
2. Click and drag a corner or a curved segment to be rounded.
   
   
3. Right-click while dragging the point or the curved segment to enter the desired line length and curvature. 
   

Curvature of a specific line can be precisely adjusted without affecting other lines.

1. Click a start point and endpoint on the segment or point to set the editing range. 
     
2. Select which side to be edited.
      
3. Click and drag a segment or point to adjust curvature within the set range.
   
   Edit 
     • By default, nearby points adjust proportionally when moving. You can move only the selected point by holding the D key while dragging.
     • Right-click while dragging the segment or point to enter a specific moving distance. 
    
   Add 
     • Click a segment whild holding the Ctrl key to add a curve point.
        *Adding to a Bezier curve points convert it to free curve points, which may adjust the curvature.
    
   Delete
     • Right-click a point and click the Delete menu to delete selected points.
     
   
4. Or click and drag a reference line to replace it with a new curve. 
    
5.  Press Enter to complete.
   → When selecting a pattern outline or internal line, update based on the edited pattern outline or internal line.
   → When selecting a reference line, update based on the edited reference line. Segment points will be added at the start and end.