The phrase "are better documented" is correct and usable in written English.
You can use it when comparing the documentation quality of two or more subjects, indicating that one has superior documentation than the other.
Example: "The new software features are better documented than the previous version, making it easier for users to understand."
Alternatives: "are more thoroughly documented" or "have superior documentation."
Other changes are better documented.
The lives of the Stanfords' dogs are better documented than those of their servants.
Telemann's encounters with the genre are better documented: he wrote of his appreciation of the "barbaric beauty" of Gypsy music in what is now Poland.
The user-level programs are better documented, more straightforward to use, and written in the Python scripting language, so advanced users can modify the programs' behavior without any recompilation.
But even the most avid Knaus-fiend might concede that this isn't the revelation past volumes were, partly because the injustices of boyhood are better documented than those of fatherhood, but mainly because Knausgaard fixes the point of view to his child self; gone is the fluid structure that drifted between the remembered moment and the moment of remembering.
Occasionally, these algorithms are of sufficient general use that we have taken the extra time to carefully re-implement them as software packages that are better documented, more efficient, more extensible, and more user-friendly than our standard research-grade code.
Nobody in the history of the universe is better documented than we are.
And one speaker did insist that Jesus' birth was better documented than President Obama's.
Python package will say more about it (it's better documented).
Since those local factors likely are the primary drivers of decomposition rates, Bradford said, they should be better documented and integrated into climate models.
Although this perhaps represents only the recent discovery of a long-established population, the expansion of the Sungrebe farther north into Tamaulipas is better documented.
