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1.1 root 1: .TH DMDCAT 1 "630 MTG"
2: .SH NAME
3: dmdcat - send files to a 630 MTG connected printer.
4: .SH SYNOPSIS
5: \fBdmdcat\fR [ \f3\-s\f1 ] [ \f3\-b\f1 ] [ \f3\-v\f1 ] [
6: \f3\-u\f1 ] [ \f3\-t\f1 ] [ \f3\-e\f1 ] [ file\&.\&.\&. ]
7: .SH DESCRIPTION
8: The
9: .I dmdcat
10: command is intended to be used
11: to send files to a printer connected to the Printer port of the 630
12: MTG terminal.
13: \f2Dmdcat\f1 will send the concatenation of files specified on its
14: command line, or the standard input if no files are specified.
15: .PP
16: The data is sent to the terminal preceded by a \fIPrinter-On\fR Request
17: escape sequence, and is terminated by a \fIPrinter-Off\fR request
18: escape sequence.
19: The \fIPrinter-On\fR request escape sequence commands the terminal emulator to start
20: sending incoming data to the printer if the printer is available. The \fIPrinter-Off\fR request escape sequence tells
21: the terminal emulator to stop the sending.
22: The escape sequences sent are:
23: .RS 8
24: .ft CW
25: .sp
26: \f3Printer On\f1 - ESC[?5;1i
27: .sp
28: \f3Printer Off\f1 - ESC[?4i
29: .ft 1
30: .RE
31: .PP
32: If the \fB\-s\fR is present, \f2dmdcat\f1 uses this set of escape
33: sequences:
34: .RS 8
35: .ft CW
36: .sp
37: \f3Printer On (no screen)\f1 - ESC[?5;2i
38: .sp
39: \f3Printer Off (no screen)\f1 - ESC[4i
40: .ft 1
41: .RE
42: .sp
43: which tells the terminal emulator to start/stop
44: sending incoming data to the printer (if the printer is available) as before
45: but not to display this data on the screen.
46: .PP
47: The terminal responds with:
48: .RS 8
49: .ft CW
50: .sp
51: ESC[?\f3ps\f1i where:
52: .sp
53: \f3ps\f1=0 indicates printer was not granted
54: .sp
55: \f3ps\f1=1 indicates printer was granted.
56: .ft 1
57: .RE
58: .sp
59: If the printer was not granted, or if the terminal does not respond,
60: \fIdmdcat\fR displays a message and aborts.
61: .PP
62: The second option, \fB\-b\fR, strips backspaces
63: from the output of \f2dmdcat\f1.
64: If backspaces result in two or more characters appearing
65: in the same place, only the last character read is output.
66: This means that the printed output appears exactly as it
67: appears on the 630 MTG screen, without bold and underline.
68: This option is useful for printers which either cannot process
69: backspaces or are slow in processing backspaces.
70: .PP
71: \fIDmdcat\fR is a shell program that calls \fIcat\fR(1) and will pass
72: the options \fB-u\fR, \fB-v\fR, \fB-t\fR, and \fB-e\fR to \fIcat\fR(1).
73:
74: .SH FILES
75: $DMD/lib/dmdgetpr reads terminal response
76:
77: .SH SEE ALSO
78: cat(1), col(1) in the
79: \f2UNIX System V User Reference Manual\f1.
80: .br
81: \f2630 MTG Terminal User's Guide\f1.
82: .SH DIAGNOSTICS
83: \f2Dmdcat\f1 uses the \f2col\f1(1) command to
84: strip backspaces with the \fB\-b\fR option.
85: \fICol\f1(1) is not available on all \s-1UNIX\s+1
86: systems.
87: The \fB\-b\fR option will give
88: an error message if it cannot locate the \f2col\f1(1) command.
89: .PP
90: \f2Dmdcat\f1 only works if it is executed from
91: the default 630 MTG terminal emulator or any terminal emulator that supports the
92: escape sequence sets described above.
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