The Design Code Utility is a command-line tool that integrates Oracle Commerce Cloud with your IDE, or code editor. It allows you to customize user modifiable source code from a Commerce Cloud server, and then upload it again.
For further information on this feature, you can refer to the Extending Oracle Commerce Cloud guide.
To use the Design Code Utility:
Open the Design page and click Code.
Scroll down to view the Advanced options and select Developer Tools.
Under Design Code Utility, click the Download button.
Save the ZIP file to a location on your local machine and extract its contents.