Github user zero323 commented on the issue:
https://github.com/apache/spark/pull/18051
I think there are two different problems here:
- Quality of the internal R documentation. I think that fixing this is
non-goal. It is not only a normal state of R packages, but also impossible to
fix without hacks or serious trade-offs.
- Quality of the online documentation. This is subjective but I think there
is a lot to do there including, but not limited to:
- Removing this IFrame nonsense. It doesn't serve any real purpose and is
completely useless.
- Cleaning duplicate links. Since almost everything here is S4 we
duplicate the size of the index with each addition make it only harder to use.
It also affects _ee also_ sections.
- Trying to clean _see also_. Something like this (example SQL function):

is just useless.
- Adding some kind of search functionality.
- Running all examples as a part of the internal docs build process.
Having readable, highlighted examples, with actual output, would be awesome.
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