Worked on enhancing documentation accuracy for the IP_ADDRESS Entity Recognizer in the microsoft/presidio repository, focusing on aligning technical details with the actual Python implementation. Addressed a documentation bug by removing an incorrect reference to checksum validation and clarifying that entity recognition is based on regular expression pattern matching, context words, and structural validation using Python’s ipaddress library. This technical writing effort improved onboarding for developers and reduced the risk of misinterpretation when integrating IP address recognition. The work emphasized clear, maintainable documentation and demonstrated attention to detail in both documentation practices and understanding of Python-based entity recognition workflows.