named-checkzone(8) on macOS
The text 2fa36b98288d, as Mac OS X 10.7.5 shipped it.
zone file validity checking or converting tool
Flags it lists
-
-D -
-F -
-M -
-S -
-W -
-c -
-d -
-f -
-h -
-i -
-j -
-k -
-m -
-n -
-o -
-q -
-r -
-s -
-t -
-v -
-w