For each pull request, Macroscope generates a succinct summary and suggests where reviewers should begin their review.
When changes are made to a pull request (e.g. a new commit), Macroscope automatically updates its PR description to include the latest changes.

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Where Pull Request Summaries Show Up in GitHub

If the PR has no description, Macroscope will automatically add its summary directly to the PR description. If the author has already written a PR description, Macroscope posts its summary as a comment—never overwriting the author’s text.