newfs_hfs(8) on macOS
The text bc52301d7075, as Mac OS X 10.5.8, Mac OS X 10.5.7, Mac OS X 10.5.6, Mac OS X 10.5.5, Mac OS X 10.5.4, Mac OS X 10.5.3, Mac OS X 10.5.2 shipped it.
construct a new HFS Plus file system
Flags it lists
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-G -
-J -
-M -
-N -
-U -
-b -
-c -
-h -
-i -
-n -
-s -
-v -
-w