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You can change the wire appearance of a LabVIEW class to keep the block diagram readable. You might consider changing the wire appearance sparingly, keeping in mind that having excessive wire colors and patterns can make the block diagram more difficult to read. Refer to the LabVIEW Style Checklist for guidelines about changing the class wire appearance to create block diagrams that are easy to read and manage. Complete the following steps to change the wire appearance of a LabVIEW class.

1. In the Project Explorer window, right-click the LabVIEW class icon for the class whose wire you want to change and select Properties from the shortcut menu to display the Class Properties dialog box.
2. Select Wire Appearance from the Category list.
3. To customize the wire appearance, select Use custom design.
4. In the Settings section, make the changes to the wire appearance that you want. You can change the wire appearance, the colors of the wire, and the width of the wire.
   
   You can preview the wire in Wire preview.
5. Click the OK button, when you are done making changes.

Note  If you change the edge foreground color of a LabVIEW class wire, LabVIEW changes the border color of class front panel terminals to match.