Missing parallel_workers setting in the chapter for parallel query

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.6/static/parallel-query.html
Description:

Hi,

maybe i overlooked something, but i have hard time to unterstand, why
max_parallel_workers_per_gather was not fully utilised in some cases.
After reading the source code, I realized that there is a setting at table
level:
parallel_workers
(https://www.postgresql.org/docs/9.6/static/sql-createtable.html#SQL-CREATETABLE-STORAGE-PARAMETERS)
I think it would help, if this setting is mentioned in the chapter for
parallel query
(https://www.postgresql.org/docs/9.6/static/parallel-query.html)
Perhaps this page would be a good place:
https://www.postgresql.org/docs/9.6/static/when-can-parallel-query-be-used.html

Regards,
Marc-Olaf