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

Document Preparation, Version 3.51
• The HP LaserJet printer has a default page length of 60 lines. Because
nroff uses a default page length of 66 lines, the printer driving table
(/usr/Iib/nterm/tab.hpljr8) for the HP LaserJet includes a printer
initialization string which sets the page length to 66 lines. The printer
is reset to its 60 line page default after the document is printed. Be
aware that the HP LaserJet cannot print on the top two and bottom two
physical lines of the page. Normally this will not cause a problem
because these regions lie within the top and bottom margins of an
nroff document.
• You should send nroff output to printers via Ip(l) in raw mode
because lp'sfiltering causes undesirable effects. Invoke lp as follows:
lp -dprinter _ R, where printer is the name of your printer administered
through the "Printer Setup" option in the Administration window.
You may also send nroff output to /dev/rawlp.
• The checkmm(l) command will flag some business letter macros as
possible errors, even though a file containing the letter macros will
format properly.
• The checkmm command will flag as possible errors the macros that
produce labeled footnotes, if they occur inside lists. A file containing
such a sequence of macros will format properly, however.
• Col may strip escape sequences off the end of documents. For
example, the ESC-N command to the AT&T 470 (produced by the
"twrest" definition in the printer driving table) is sometimes removed
from the end of a document. If this happens and the -T470-12 or
-T470-17 option to mm or nroff is used, the printer will not be reset to
10 cpi at the end of printing.
• Italics do not work correctly with the mm macros. Mm attempts to use
the continuous style of emphasizing on headings by default. If the
"iton" and "itoff' definitions in the printer driving tables contain the
printer's correct "begin italics" and "end italics" codes, the result is
headings in which the words are in italics and the spaces between
them are underlined. This is because mm assumes that nroff will
convert all requests for italics to underlining (an obsolete assumption)
and inserts underscore characters in all the spaces.
20 Important Information