dnssec-signzone(8) on Linux
The text ba98dbcbe050, as Debian 3.1 (Sarge) shipped it.
DNSSEC zone signing tool
Flags it lists
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-a -
-c -
-d -
-e -
-f -
-h -
-i -
-n -
-o -
-p -
-r -
-s -
-t -
-v