In AutoCAd, What is the process of copying the dimension styles from one drawing to another drawing?

the easiest way is to copy a dimension line with style you want into your drawing.

1. Click the Plug-Ins tab, then click Explore.
2. If the folder where the drawing you is not listed, click Add Watched Folder at the bottom.
3. Navigate to the folder, select it, and click OK. AutoCAD scans the drawings in the folder; this process may take some time. The Content Explorer works best when you plan in advance.
4. When the process of scanning is done, or if the folder you want is listed, you can do one of two things:
5. If you know the name of the element, enter it in the Search box at the top of the Content Explorer.
6. If you know the location and name of the drawing, double-click the folder and navigate to the drawing. Double-click the drawing to display its elements.
7. When you see the element you want, such as a text style, drag it onto the drawing area to import it into your drawing.