BACKSPAC Use the BICKSPIC command to restart or reposition the current output on
a real punch or printer. If the BICKSPIC com.and is issued while an
intervention required condition is pending on the printer or punch, the
interrupted channel program is terminated and the backspace is performed. The format of the BICKSPIC command is:
Printer BICKSPIC Pormat Punch BACKSPAC Pormat , r , I BAcks pac raddr IPile I I Blckspac raddr raddr PILE pages EOP I pages [EOP] I I I 1 I I L JI I is the address (cuu) of the real unit record device that is to
be backspaced. This address must be that of a punch or a
printer.
specifies that the output spool printer or punch file is to be
restarted from the beginning.
specifies the number of pages to be backspaced on the printer.
If the field is not specified, the printer is backspaced to
the beginning of the page being printed when the command is
received.
specifies that printing is to resume from the end of the spool
file. Backspacing occurs the requested number of pages from the end of the spool file. Printing is restarted at this
location.
1. Pages for backspacing are counted starting from the end of the
current spooling buffer. output containing a small number of lines
per page may require a count of more than one to backspace one
page.
2. Pages are
channel 1
skip to
restarted
begins at
counted in BICKSPAC operations by looking for skip to
specifications (page ejects). If a file does not contain
channel 1 specifications, processing of the file is
regardless of the number of pages indicated. Counting
the end of the current buffer. 54 V!/310 Operator's Guide

{
PRT} raddr BACKSPACE userid FILE = PUN file RECDS = norecs COpy = nn a typ
raddr
userid
is the real device address.
is the identification of the user whose file was active and
backspaced.
file is the unique, systea-assigned spoolid nuaber by which V!/370 refers to the file.
norecs
nn
is the total nuaber of logical records in the file.
is the rema1n1ng number of copies of the file to be created,
where 01 is the last copy.
a is the spool file class.
typ is the originating device type, PRT, CON, or PUI. Section 3. CP Commands 55