newfs_msdos(8) on macOS
The text e7c0816f4ad4, 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, Mac OS X 10.5.1, Mac OS X 10.5 shipped it.
construct a new MS-DOS (FAT) file system
Flags it lists
-
-B -
-F -
-I -
-N -
-O -
-S -
-a -
-b -
-c -
-e -
-f -
-h -
-i -
-k -
-m -
-n -
-o -
-r -
-s -
-u -
-v