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<title>Replace unprintable characters</title>
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<h4 id="rzaluruc">Replace unprintable characters</h4>
<p>You can replace unprintable characters in your data before the data is
written to the printer or to a spooled file by specifying RPLUNPRT(*YES) on
the CRTPRTF, CHGPRTF, or OVRPRTF command. The replacement of an unprintable
character depends on the printer being used and the hexadecimal value of the
unprintable character.</p>
<p>The RPLUNPRT value must be selected before the spooled file is created.
Once a spooled file is in an output queue, changing the RPLUNPRT value has
no effect on that particular spooled file. </p>
<ul>
<li>When RPLUNPRT(*YES) is specified, any characters in the range hex 00 through
hex 3F, and hex FF, are replaced. The default replacement character is a blank.
The character that a printer cannot print varies depending on the type of
printer.</li>
<li>When RPLUNPRT(*NO) is specified, no translation of the data stream is
made. Any characters in the range hex 00 through hex 3F, or hex FF, might
cause undesirable results. These characters are in the range used by printer
control characters.
<p>For most characters in this range, the printer signals
an unrecoverable error and the spooled file either is held in the output queue
or is not processed. Some characters in this range control forms action and
character representation on the printer and, as a result, additional skipping
or spacing might occur. If control characters are placed in the data, system
functions such as displaying or copying spooled files and restarting or backing
up a printer might produce results that cannot be predicted.</p>
<p>If the
hexadecimal value of the unprintable character is hex 40 through hex FE, a
message is sent to the message queue associated with the printer. The message
gives you the option to end the writer, hold the spooled file, ignore the
error and continue printing, or select a page number where printing should
be restarted. If the ignore option is taken, then unprintable characters
continue to be reported. If the option to start again (specify page number)
is taken, all unprintable characters are replaced with blanks and you receive
no more notification for unprintable characters.</p></li></ul>
<p><span class="bold">Considerations for the 4245, 5262, 6252, and 6262 printers</span></p>
<p>The printer translates lowercase characters to uppercase characters when
using a print band that does not contain lowercase characters. If your print
job contains other characters that are not on the print band, they can be
translated to blanks by specifying RPLUNPRT(*YES) for the printer file.</p>
<p>A print band is selected by switches on the 5262 operator's panel.
The operator must select both a language ID and a band image using these
switches.</p>
<p>The 4245, 6252, and 6262 Printers detect the print band the printer is
using.</p>
<p>When a print band changes for a print job, no inquiry message is sent to
the message queue associated with the printer writer. You can specify a different
form type for that job, such as blank payroll forms or blank invoices. A
message to change the form type is sent to the printer writer message queue
to notify the operator of the change to the print band.</p>
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