To delete a custom dimension standard:
Select File > Document Settings > Document Preferences. From the Document Preferences dialog box, click the Dimensions tab, and then click Custom.
You can also a create custom standard from the Tool bar or Object Info palette. With any one of the dimension tools in the Dims/Notes tool set selected, open the Dim Std list from the Tool bar and select Custom Standards from the list. With an existing dimension selected, open the Dim Std list from the Object Info palette and select Custom Standards from the list.
The Custom Dimensions dialog box opens.
Select the custom standard to delete, and click Delete.
The Replace Dimension dialog box opens.
Select a new dimension standard to replace the standard being deleted, and then click OK.
Any existing dimensions that used the deleted standard are changed to the replacement standard.
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