In the Label Style Composer dialog box, click the Layout tab.
Select a component from the Component Name list.
Note: Text components do not have a Linetype option.
Click the Value column for Linetype, and then click .
In the Select Linetype dialog box, select a linetype, or select one of the following options:
ByLayer. Labels obtain their linetype from the label style’s layer (defined on the General tab of the Label Style Composer).
ByBlock. Labels obtain their linetype from the parent object’s AutoCAD properties. The object is first examined for any property overrides. If none are found, then the linetype property of the object layer is used.