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

259
OPERATOR.SYS The user and account that MPE automatically logs on to at the console
when the system is started. OPERATOR.SYS may or may not be assigned special
capabilities. Unlike the system supervisor (who is assigned OP capability), or the system
manager (who is assigned SM capability), there is no mnemonic that entitles the operator
to execute a special subset of commands. The operator's power and responsibilities derive
solely from control of the system console and any capabilities assigned to it by the account
manager of the SYS account.
optional parameter A parameter that is not required when entering a command or
calling an intrinsic. In reference manuals, optional parameters are surrounded by square
brackets ([]).
outfence A number in the range of 1 (lowest priority) to 14 (highest priority), used to
control access to the system printer. If a job does not have an input priority higher than the
system outfence (default 7), it will not print.
output Data transferred from internal to secondary (external) storage in a computer. Also,
the process of transferring information from the computer to a peripheral device.
output priority A number in the range of 1 (lowest priority) to 13 (highest priority)
assigned to an output spool file either by the system (a default value) or by a user. It is
used to determine the order in which files will be printed.
parameter A value in a list of values that is passed to a procedure. The parameter is used
in calculations or operations in the procedure.
path The course within a computer that a message takes, typically through software
protocol handlers.
peripheral A hardware device attached to and controlled by a computer, such as a
terminal, tape drive, disk drive, or printer.
permanent file A disk file with an entry in the system directory. To delete the file, it must
be erased from the system with the PURGE command or with certain invocations of the
FCLOSE intrinsic.
permanent space Disk space reserved for use by permanent structures such as files, the
label table, or the free space map.
port An outlet from the computer used to connect the computer to peripheral devices. A
cable runs between the outlet and the device.
positional parameters One or more terms appearing in a specific order on the command
line that modify the intent or effect of the command. If a positional parameter is omitted,
the user must supply a comma in its place.
power down To turn the system power off.
power up To turn the system power on.