A dimension style is a named group of dimension settings. When you apply a style to an object, the setting determines the format of that object.
The Dimension style uses the Text style as a substyle to format dimension text. You can specify individual text attributes (bold, underline, and so on) when you create or modify a dimension style. Changes to dimension text style update the Text style.
You can also specify a text style for the tolerance portion of the dimension on the Text page. If no specific text style is specified for the tolerance, the text style is used.
You can display the dimension values in both primary and alternate units in the following types of drawing annotations:
The dual units display is set on the Alternate Units tab of the dimension style for dimensions and all note types.
You can modify individual dimensions for special annotation purposes.
To override dimension style settings, right-click a dimension, and then choose Options, Precision, Tolerance, or Text. Overrides always supersede the equivalent setting in the dimension style.
When you customize the dimension style in a drawing, the changes are saved in that drawing. To make customized styles available in all new drawing files, save the changes in the style library. The style is available to all documents that use the style library.
You may not be able to save changes to the style library when the style library is locked to prevent unauthorized changes.