Pin Jin updated the Custom Vision limits documentation in the MicrosoftDocs/azure-ai-docs repository, focusing on clarifying the maximum number of regions per image for object detection during prediction. Using Markdown and git-based collaboration, Pin Jin revised the limits and quotas guidance to align more closely with actual product behavior, reducing ambiguity for users. The work involved careful analysis of existing documentation and coordination with documentation tooling to ensure accuracy and consistency. By improving the clarity of technical guidance, Pin Jin helped reduce potential user confusion and support queries, demonstrating attention to detail and a methodical approach to documentation engineering.