You can set the line end and join styles for objects that have lineweight assigned, either as an object property or as a plot style override.
- Click Format
Plot Style.
At the command prompt, enter stylesmanager. - Right-click a CTB or STB file. Click Open.
- In the Plot Style Table Editor, Table View tab, click the Line End Style or Line Join Style field for the plot style you want to change.
- Select an option from the drop-down list.