Set properties for dimension styles.
DIMSTYLE (Command) Find
When you choose Continue in the Create New Dimension Style dialog box, the New Dimension Style dialog box is displayed.
You define the properties for the new style starting with the settings from the dimension style that you selected to start the new style in the Create New Dimension Style dialog box.
Choosing either Modify or Override in the Dimension Style Manager displays the Modify Dimension Style or the Override Dimension Style dialog box. The content of these dialog boxes is identical to the New Dimension Style dialog box, although you are modifying or overriding an existing dimension style rather than creating a new one.