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Using the Comments Chart, new to Flow 5.3.0, you can now visualize all the comments, for the measures you add to the chart configuration, and for the selected time period, in a word tree chart. You'll see any and all comments, what version of the value they were captured against, what the value was/is at that version, and who entered the comment.
You can choose to, by default, show only the latest comment entered, and branch out the tree manually where additional comments exist. Or you can choose to view the entire tree by default.