The OWNER command to indicate the user owning the file being sent. Whether or not the OWNER is applied at the receiving host is implementation dependent. OWNER is usually equated to a username or sign-on ID.
An OWNER statement must come after a FILE command and should preceed any DATA commands.

The syntax is
  OWNER     owner ID  

owner ID   is an installation dependent username or sign-on ID

Many systems, such as DEC's VMS, for example, and all UNIX, represent OWNER (user) as a number internally. It is recommended that the numeric value not be used, but rather the corresponding mnemonic whenever possible.

OWNER is a "meta command".