Filter
Top Products
628 Chapter 8
Command Definitions SP-Z
SPOOLER
number of lines that fit on a standard 11-inch page at 6 lines per inch,
allowing three lines of margin at the top and the bottom of the page. This
is often a flawed assumption, as the following examples show:
• For many applications (for example, A4 paper, 8 lines per inch, and so
on) 60 lines per page is the wrong value.
• Other applications are designed for specific forms and manage their
own paper advancement. These applications may attach a
carriage-control value to a record which causes paper to advance (say)
five lines after printing a line of data. The storage manager counts this
as one record.
• Control records (those that affect some aspect of printer operation but
do not print anything) are included in the 60 record count.
The last two examples come about because the storage manager does not
interpret the data in the spool file, as mentioned earlier, and so cannot
detect these situations.
In summary, if the storage manager cannot interact with the device to
determine page boundaries, it uses a carriage control "1" or %300, or 60
records per page to simulate checkpoints for SPOOLER ldev;RESUME.
Therefore, for the most consistent results with serial printers you should
always include an OFFSET=1 parameter, with the SUSPEND option. You can
also include the parameter with a subsequent RESUME option, but this does
not prevent another spooler process from printing the file from the "wrong"
place in the meantime.
SHOW The SHOW parameter displays the status of the spooling process(es)
associated with the device(s) specified. All other parameters on this
command are processed first, so the SHOW option reflects the updated state
of the process(es) at the completion of the command executor. Please refer
to the note following the example below.
OPENQ The OPENQ option or parameter enables spooling for a specified logical
device, device name, or all devices of a device class. This allows users to
generate spool files on that device(s). See the OPENQ command for more
information.
OPENQ is the default value for the START option.
SHUTQ The SHUTQ option or parameter disables spooling for a specified logical
device, device name, or all devices of a device class. This prevents users
from generating spool files on that device(s). See the SHUTQ command for
more information.
SHUTQ is the default value for the STOP option.
Operation Notes
This command allows the user to start, stop, suspend, and resume spooler processes, and
release files from the spooler process(es). At least one of the options must be specified for
the SPOOLER command.