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Unix Version 7 - man page for roff (v7 section 1)

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ROFF(1) 										  ROFF(1)

       roff  -	format text

       roff [ +n ] [ -n ] [ -s ] [ -h ] file ...

       nroff -mr [ option ] ... file ...
       troff -mr [ option ] ... file ...

       Roff  formats  text  according  to  control lines embedded in the text in the given files.
       Encountering a nonexistent file terminates printing.  Incoming inter-terminal messages are
       turned off during printing.  The optional flag arguments mean:
       +n   Start printing at the first page with number n.
       -n   Stop printing at the first page numbered higher than n.
       -s   Stop  before  each	page (including the first) to allow paper manipulation; resume on
	    receipt of an interrupt signal.
       -h   Insert tabs in the output stream to replace spaces whenever appropriate.

       Input consists of intermixed text lines, which contain information to  be  formatted,  and
       request	lines,	which  contain	instructions about how to format it.  Request lines begin
       with a distinguished control character, normally a period.

       Output lines may be filled as nearly as possible with words without regard to  input  lin-
       eation.	 Line  breaks  may  be	caused at specified places by certain commands, or by the
       appearance of an empty input line or an input line beginning with a space.

       The capabilities of roff are specified in the attached Request Summary.	Numerical  values
       are denoted there by n or +n, titles by t, and single characters by c.  Numbers denoted +n
       may be signed + or -, in which case they signify relative changes to a quantity, otherwise
       they  signify an absolute resetting.  Missing n fields are ordinarily taken to be 1, miss-
       ing t fields to be empty, and c fields to shut off the appropriate special interpretation.

       Running titles usually appear at top and bottom of every page.  They are set  by  requests

		 .he 'part1'part2'part3'

       Part1 is left justified, part2 is centered, and part3 is right justified on the page.  Any
       % sign in a title is replaced by the current page number.  Any nonblank	may  serve  as	a

       ASCII  tab  characters  are  replaced  in the input by a replacement character, normally a
       space, according to the column settings given by a .ta command.	(See .tr for how to  con-
       vert this character on output.)

       Automatic hyphenation of filled output is done under control of .hy.  When a word contains
       a designated hyphenation character, that character disappears from the output and  hyphens
       can be introduced into the word at the marked places only.

       The -mr option of nroff or troff(1) simulates roff to the greatest extent possible.

       /usr/lib/suftab	   suffix hyphenation tables
       /tmp/rtm? temporary

       Roff is the simplest of the text formatting programs, and is utterly frozen.

Request    Break Initial Meaning
the current line is stopped.
without filling.
to be invoked by request `.xx' (definition ends on line beginning `..').
and is not done, if n=0.

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