450(1g,C)                   AIX Commands Reference                    450(1g,C)



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450



PURPOSE

Handles special line-motion functions for the DASI 450 work station.

SYNTAX


450 ---|


Note:  This command does not have MBCS support.

DESCRIPTION

The 450 command reads standard input, processes its data for output on a DASI
450 or an equivalent work station (such as the DIABLO 1620 or Xerox 1700.  It
converts half-line forward, half-line reverse, and full-line reverse motions to
the correct vertical motions on standard output.  It attempts to draw Greek
characters and other special symbols in the same manner as the 300 command
vertical line space.  See "greek" for a list of symbols supported by the 450
command.

Use 450 with the nroff -s flag or .rd requests when you need to insert paper
manually or change fonts in the middle of a document.  Instead of using the
return key in these cases, you must use a the line feed key to get any
response.  In many cases you can use nroff -T450 instead of the 450 command.
However, you must use 450 if you require special delays or options.  In a few
cases, using 450 may produce better aligned output.  You can pipe the output of
the neqn command to 450 to print equations neatly.

Notes:

  1. Make sure the PLOT switch is turned on before using this command.  Also,
    the SPACING switch should be in the desired position, either 10- or
    12-pitch.  For either setting, vertical spacing is 6 lines per inch unless
    changed to 8 lines per inch by an escape sequence.

  2. Some special characters cannot be correctly printed in column 1 because
    the print head cannot be moved to the left from that position.

  3. If your output contains Greek characters or reverse linefeeds, use a
    friction-feed platen instead of a forms tractor.  A forms tractor tends to
    slip when reversing direction.

FLAG





Processed November 8, 1990         450(1g,C)                                  1

450(1g,C)                   AIX Commands Reference                    450(1g,C)



-f  Permits the use of ETX/ACK protocol with 1200 bps printers.  You cannot use
    450 with this flag in a pipeline or if you redirect its output.  Instead it
    must drive the printer directly.

RELATED INFORMATION

See the following commands:  "300, 300s,"  "eqn, neqn, checkeq,"  "graph,"
"greek,"  "nroff, troff,"  "tabs," "tbl,"  "tplot," and  "troff."

See the Greek miscellaneous facility in AIX Operating System Technical
Reference.












































Processed November 8, 1990         450(1g,C)                                  2