FILE

 Indicates the name of the file to be connected to the unit.  It
 takes the following form:

 FILE = name

 name   Is a character or numeric expression.

 The "name" can be any pathname (or specification) allowed by the
 operating system.  (See the appropriate manual in the OpenVMS
 operating system documentation set.)

 Any trailing blanks in the name are ignored.

 If the following conditions occur:

  o  FILE is omitted

  o  The unit is not connected to a file

  o  STATUS='SCRATCH' is not specified

 then VSI Fortran generates a file name in the form FORnnn.DAT,
 where "nnn" is the logical unit number (with leading zeros, if
 necessary).

 If the file name is stored in a numeric scalar or array, the name
 must consist of ASCII characters terminated by an ASCII null
 character (zero byte).  However, if it is stored in a character
 scalar or array, it must not contain a zero byte.