Callstack.ai PR Reviewer supports two formats for review comments: table and inline

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Inline Reviews

Inline reviews style is the default style for review comments. PR Reviewer creates comments directly in the code where the issue was found, alongside the suggested fix. 
pr_review:
    review_style: inline

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Table Reviews

Table reviews style is an alternative style for review comments. PR Reviewer creates a single review comment containing a table with all the issues found in the pull request, grouped by module. 
pr_review:
    review_style: table