Proteus 8.15 is a professional-grade software for electronic design automation (EDA), developed by Labcenter Electronics. Obtaining a legitimate license key for Proteus 8.15 is essential for accessing its full suite of schematic capture, PCB design, and simulation tools. How to Obtain a Proteus 8.15 License Key
In previous versions you specified which mechanical layer to specify as the slotting layer. When imported into 8.15 the contents ( Copyright Infringement of Software - Cornell University license key for proteus 8.15
Conclusion
To get a valid license key, users should follow official channels provided by Labcenter Electronics: Proteus 8
License key format and delivery:
Step 2: Access the License Key Dialog