Github user mengxr commented on the issue: https://github.com/apache/spark/pull/13109 I just checked the generated R doc and I felt that we shouldn't group many methods together. For example, in this PR, the `DESCRIPTION` section looks okay because we used `crosstab - ...` and `freqItems - ...`. But the `Arguments` section becomes very messy and the `Value` section is even worse. The example code are chained together. See attached screenshots. `summary` is another example here. It might be better to only group methods are closely related to each other and share the same arguments. ![screen shot 2016-06-20 at 11 21 48 pm](https://cloud.githubusercontent.com/assets/829644/16219832/e5114c38-373d-11e6-9ef3-ae05243cc46d.png)
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