External resources are skipped by default from GroupDocs.Signature 26.9. How to wire the three load modes into a Python service that renders and signs uploaded documents, with the whitelist rules and the measured proof that nothing was fetched....External resources are skipped by default from GroupDocs.Signature 26.9. How to wire the three load modes into a Python service that renders and signs uploaded documents, with the whitelist rules and the measured proof that nothing was fetched.