dnssec-signzone(8) on macOS
The text 655ef31baf35, as Mac OS X 10.4.9.x86, Mac OS X 10.4.9.ppc, Mac OS X 10.4.8.x86 shipped it.
DNSSEC zone signing tool
Flags it lists
-
-a -
-c -
-d -
-e -
-f -
-g -
-h -
-i -
-k -
-l -
-n -
-o -
-p -
-r -
-s -
-t -
-v -
-z