Topical help is available for each page of the administration GUI by clicking the Help button on a page or by clicking the Documentation button.
Click the Documentation button for the PDF files. They are installed with the SUNWsfwd package.
The man pages for SunScreen are located in /usr/share/man/man4sunscreen.
The man pages for SunScreen SKIP and IPsec/IKE are located in the standard Solaris man page directory.