List and describe different rc files:

[Mrt134]

As per this thread on Discourse: https://discourse.trueos.org/t/does-etc-rc-conf-local-work/1977/5

TrueOS users can have numerous rc/rc.* files installed on their system. It is beneficial to test, list, and describe these files in the Handbook (I'm thinking section 4.2: Post-Install/Managing System Services and Daemons). Screenshots are unnecessary and a single table is likely all that is needed.

This can help prevent user confusion and simplify their process to customise or edit startup services.