System Startup, Configuration, and Shutdown Reference Manual (32650-90892)

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a file code between 0 and 1023 to a file they create to classify it according to its purpose.
file equation A method of equating a file name to a device or another file. The FILE
command is used to establish the relationship of the file to the device. Generally used to
direct the input to or output from a program, job, or session to a particular device by
referring to the device class, such as TAPE or LP.
file identifier A number associating a name with a file system object. The file identifier is
given to users to access objects via the file system.
file name A string of up to eight alphanumeric characters, the first of which must be an
alphabetic character. The file name is assigned when the file is created or first saved.
file number An integer value assigned by the FOPEN intrinsic that is used to refer to a file
in a user program. File numbers zero through seven are reserved for the operating system.
file space The number of sectors of disk space that a user, group, or account is using. It is
determined by executing the REPORT command.
foreign disk A non-system domain disk that MPE V/E does not recognize as a private
volume or serial disk. Foreign disks are non shareable devices, and can be formatted either
sequentially or for direct record access. Foreign disks, such as private volumes and serial
disks, do not have entries in the system volume table.
formal file designator An alias file name that is used either programmatically or in a
file equation to refer to a file. The formal file designator is not the file name found in the
system file directory.
free space map A map of allocated and available disk sectors on the volume set.
fully qualified file name A complete file description that includes the file name, the
group to which the file belongs, and the account to which the group belongs. The fully
qualified file name of the LETTER file in the PUB group of the SYS account is expressed as
LETTER.PUB.SYS.
function keys Special keys on the terminal keyboard that are labelled sequentially, F1,
F2, F3, and so on, and that correspond to the windows that appear at the bottom of the
terminal screen. Function keys perform various activities.
Fundamental Operating Software (FOS) The programs, utilities, and subsystems
supplied on the master installation tape (MIT) for MPE.
group Part of an account that is used to organize the account's files. All files must be
assigned to a group. Each group must have a unique name within an account. Groups are
the smallest entity for which use of system resources is reported. A PUB group is
designated for each account when it is created. Additional groups are created within the
account, as needed, by the account manager.
group-level security The file access modes, and the types of users to whom they are
available, as specified by the account manager when the group is created. File access