AT&T UNIX™PC Unix System V Users Manual - tenox

Document Preparation, Version 3.51
recognizes ESC-7, ESC-8, and ESC-9 for reverse, half-reverse, and halfforward
line feeds. Col also garbles any escape command that is more
than two characters long. Furthermore, nroff cannot handle 8-bit special �
characters used by some printers, and this requires using the SO and SI
characters to indicate extended characters. You should therefore use the
filters 470(1) (for AT&T 470, 475, and C. Itoh 8510 printers), 478(1) (for
AT&T 478, 479, and IBM printers), and fx(l) (for Epson FX printers)
after col to output the printer's correct control codes. You should also use
hplj(l) as a filter directly after nroff (do not use col), to output correct 8bit
extended characters for the HP LaserJet. The AT&T 455 printer does
not require any filtering. The manual pages for these filters contain
sample UNIX nroff command lines.
You must send these filters' output either to /dev/rawlp or to Ip(l) in raw
mode because lp's normal filtering will cause unwanted effects.
Please note that new nroff special characters have been defined in the
driving tables for these printers and several of the previously supported
printers. These definitions are included to permit printer-supported
special characters to be used with neqn(1). This requires the use of two
versions of /usr/pub/eqnchar. Please refer to the eqnchar(5) manual
page for an explanation. A full list of nroff special characters is provided
in Appendix A. This list was printed on a typesetter using troff. The
appearance of the characters is specific to the typesetter used and will
vary on other printers. Due to character set and incremental motion
limitations, most nroff supported printers will only print a rough
approximation of many special characters, and will not print \(cs and \(vs,
the control-shift and visible space indicator characters. The \(br, \(rb, \(If,
and \(lc characters have been offset to the right one space in the table so
they will be fully displayed without running into the characters above and
below.
5. Memo Headings and Proprietary Markings
The file /usr/lib/macros/strings.mm is external to and supplements the
mm macro package. The file contains string definitions enabling the user
to specify a company's name, logo, and proprietary information to appear
18 Important Information
�, \