The following PF man pages are written by or modified for Oracle Solaris:
Describes the firewall service.
Manages PF rules, displays tunables, and performs other tasks.
Stores packet filtering rule sets.
An operating system (OS) fingerprint database that stores OS signature information.
Maintains a log of PF actions.
Handles FTP transfers that pass through PF doing NAT
The following references provide additional explanations, examples, tutorials, and man pages.
Hansteen, Peter N.M. The Book of PF, 3rd Edition. No Starch Press. ISBN 978-1-59327-589-1, 2014.