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To duplicate an existing norm rule, you'll want to find an existing norm rule that is similar to the rule you have in mind. You can then simply adapt edit that rule to meet your needs.

1. On the left pane of the metadata editor, select the Rules tab.
2. Click on Normalization rules.
3. Select the normalization rule and from the options that appear, select Duplicate.
   
   
   
   
4. Rename the rule and make sure to edit the Description field accordingly.
5. Click on Save.
6. Edit the norm rule in the metadata editor.
7. When you're done, cilck click on Save at the lower right corner of the screen.

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1. Open your selected bibliographic record in the metadata editor.
2. Click on the split editor icon  on the upper right corner of the metadata editor, or simply click F6.
3. The metadata editor will split into two panes.
4. Click anywhere in the right pane.
5. Go to the Rules tab.
6. Select the norm rule you want to test, and from the options that appear select Edit.
7. The norm rule will appear in the right pane.
8. Click on the Preview button.
9. The metadata editor will display the exisiting existing bibliographic record in the left pane, and the preview record (i.e. how the record would look if the norm rule were applied) in the right pane.

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