On the Contents tab, select the neighbor bolt representation, whether to show hidden lines, center lines and reference lines, and which additional markings to show. A reference line is a line between the points from which a part is created.
On the Appearance tab, select the color and type of the lines. The color of the center lines can be changed only on the drawing and view level, not on the object level. For center lines, you can only adjust the color in the properties dialog box, not the type.
You can adjust the line type of part center lines with the advanced option XS_CENTER_LINE_TYPE.