mount_hfs(8) on macOS
The text 9e538e0698ea, as Mac OS X 10.2.8.G5, Mac OS X 10.2.8, Mac OS X 10.2.7, Mac OS X 10.2.6, Mac OS X 10.2.5, Mac OS X 10.2.4, Mac OS X 10.2.3, Mac OS X 10.2.2, Mac OS X 10.2.1, Mac OS X 10.2 shipped it.
mount an HFS/HFS+ file system
Flags it lists
-
-g -
-m -
-o -
-u -
-w -
-x