z/VM: CP Commands and Utilities Reference - z/VM - IBM

BACKSPACE/BACKWARD
BACKSPACE/BACKWARD
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Notes:
BAckspace
BAckward
Authorization
Purpose
Operands
Usage Notes
(1)
rdev
(2)
rdev
1 Format for a real printer.
2 Format for a real punch.
1
File
nnnnn
File
Privilege Class: D
42 z/VM: CP Commands and Utilities Reference
EOF
Use BACKSPACE to restart or reposition real device output (printer or punch).
rdev
identifies the real device number of the punch or printer to be backspaced.
File
specifies that the output spool printer or punch file is to be restarted from the
beginning. For punch output, FILE is the default.
nnnnn
specifies the number of pages (in decimal, to a maximum of 32,767) to be
backspaced on the printer. If you do not specify a value, the printer backspaces
to the beginning of the page being printed when the command is received. For
printer output, the default value is 1.
EOF
specifies that backspacing is to start from the end of the spool file and then
continue backward for the requested number of pages. Printing begins again
from this new position.
1. BACKSPACE is identical to BACKWARD.
2. If you enter a BACKSPACE command while an intervention-required condition is
pending on your printer or punch, the command does not take effect
immediately. Once the intervention-required condition is cleared and the current
outstanding I/O operation completes, the BACKSPACE command is executed.
3. In BACKSPACE operations, pages are counted by looking for page ejects. If a
file does not contain page ejects, 66 output lines, including blank lines, are
treated as a “page.”
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