Use the ExportDimensionStyle command to export the dimension styles from the current drawing to an external ASCII file (with .dim extension).
You can use ExportDimensionStyle and ImportDimensionStyle to transfer dimension styles from one drawing to another.
To export dimension styles:
Clicking a style displays the dimension variables defined for that style.
Note: The command generates a .dim file which you can use with ImportDimensionStyle command.
Access
Command: ExportDimensionStyle
Menu: XtraTools > Dimensions > Export Dimension Style
Ribbon: XtraTools > Dimensions > Export Dimension Style