The output class for a file is assigned at the time of the file's
creation and is the class that is associated with the virtual device
that created it. When a user logs on to the syste., the class
associated with the device is the one defined in his user directory
entry for that device; however, he may alter this class at any time with
the SPOOL co •• and. After files are closed and are awaiting output,
their class can be altered with the CHARGE com.and either by the file's
owner or by the spooling operator. The spooling operator can alter the standard assign.ents of output classes of a real output device with the START co •• and.
Output priorities can also be rearranged by altering the hold status
of a file. The system operator can hold or release the files of
specific users, all files of a given type, or all files in the system. Through judicious coabination of the class and hold functions, the
operator can exercise flexible control of the spooling functions. Be
can use the class function to direct output to specific printers containing special toras or special print train arrangements, and to
force a specific priority sche.e. The hold function can ensure the
i •• ediate processing of high priority output files, while allowing high
volu.e or low priority jobs to be deferred for output until periods of
lov system usage. SPOOLIBG COBBINDS The co •• ands shown in Figure 13 control VB/370 sFooling operations. User Classification Com.and General User Spooling Operator BACKSPAC X CHINGB X X CLOSE X DRAIR X FLUSH X FRBB X HOLD X LOADBUF X ORDBR X X PURGB X X REPEAT v A SPACE X SPOOL X START X TAG X TRANSFER X X Figure CP Spooling Commands This list represents all the CP com.ands that pertain to spooling
operations. Users having privilege classes D (the spooling operator) G (the general user) can issue these co •• ands. Users with only the
G privilege class cannot invoke class D commands.
214 VB/370 Operator's Guide

The spooling operator has responsibility for the following unit
record spooling operations. He must: 1. Verify that the special user identification (ID) card
precedes a user's physical deck of cards to associate the cards
with the correct user·s virtual machine (see "Spooled Card Input.")
2. sure that sufficient blank cards are available for the punch
unit, and that the paper in the printer is the proper size, width,
and number of copies, and that the proper print train is mounted and the print buffer is properly loaded.
3. Separate punched and printed output by user identification (userid)
code.
4. Start, stop, restart, or rearrange the sequence schedules of spool
files to be printed or punched.
The spooling commands are discussed (along with other operator
co •• ands) in the "Operator Commands" section.
The BOLOG Fassword is reserved for users who are not assigned any
privilege class. These users cannot log on to a virtual machine. The
user with the BOLOG password can submit jobs to the ces Batch facility
via the real card reader. The user with the BOLOG password can also be
the recipient of spool files sent by any other logged-on user only if
the other user issued a SPOOL FOR command to the userid having the BOLOG password. SPOOLED CARD IBPUT Spooled input from a real card reader requires a CP ID (identification)
card before the VM/370 system can accept it for Note: Load cards for only one user at a time. V8/370 does not look for In-cards in the middle of the card deck. The CP ID card must be inserted in front of the card deck. Then
place the deck in the empty feed hopper. Then ready the reader device
and push the EOF button. The reader immediately processes the cards (if
no errors are encountered) and place the file on a direct access device.
The file now resides in the virtual machine card reader that was
identified by the CP ID card. Note that a file is transferred fro. the
real reader to the virtual reader regardless of whether that user is
logged on or off. The user may log on at any time to read the file. Section 5. Operator Spooling Functions 215