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## Changing tube appearance

Figure 74

Figure 75

The Tube operator provides a few knobs that control the appearance of the generated tubes. First of all, the tube width can be set by typing a new width into the Width text field in the Tube operator attributes window (figure). The number of polygons used to make up the circumference of the tube can be altered by typing a new number of sides into the Fitness of tube text field. Finally, the ends of tubes can be capped instead of remaining open by turning on the Cap Tubes check box.