The name of the file system you want to mount on this subdirectory. This argument is case-sensitive. For an HFS file system, this name must be specified in uppercase except for the three special symbols that can be used to provide name substitution. If you are using the generic asterisk (*) for the subdirectory name, then you can use one of these three symbols when specifying a file system name or file system parameter that has a specific form with the name inserted as a qualifier.
For example, ifused to represent the name exactly, as is. used to represent the name in uppercase characters. used to substitute the system name.
For an NFS file system, you can specify a unique arbitrary name that is descriptive about what is mounted. For example, you could specify the pathname for the file system being mounted.