There is no verbose description of freebsd-sysinstall on the following page:
Someone(TM) needs to write a more verbose description for it. It then
needs to be copied into the Handbook.
This is the mailing list for people working on the system installation
scripts for FreeBSD.
Initially focused on the sysinstall(8) application, it has now been
extended to cover modern applications such as bsdinstall(8).
For bugs matching the following criteria:
Status: In Progress Changed: (is less than) 2014-06-01
Reset to default assignee and clear in-progress tags.
Mail being skipped
Over to postmaster to config mailman.
I added the description.