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To make troff (actually a.out):
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make
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You will also need to write a driver for your favorite output device.
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d202.c provides a model, although it is specialized to a machine no
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one has. There are also a variety of postscript drivers that are the
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best thing to use if you have a postscript device.
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You will also have to make a DESC file for your typesetter and some
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font description files; see dev202 for examples. These describe the
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named characters, widths, kerning information, and output codes.
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Nroff is the same program as troff, so you should
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cp a.out /usr/bin/troff
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ln /usr/bin/troff /usr/bin/nroff
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or the equivalent.
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You will also need terminal description files for your terminals; see
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tab.37, tab.450 and tab.lp for examples.
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Troff uses files that are normally stored in /usr/lib/font;
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macro packages are in /usr/lib/tmac; and nroff tables are in
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/usr/lib/term. You can edit tdef.h to change these assumptions.
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There have been a few features since the last version, and a number of
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significant internal changes. Not all are improvements, of course.
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Most of the more recent changes, including bug fixes, are in FIXES,
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which you should read also.
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