neqn Command
  
  
  Purpose
  
  Formats mathematical text for the nroff command.
  
   Syntax
  
  neqn [  -d Delimiter1Delimiter2 ] [  -f Font ] [  -p Number ] [ 
  -s Size ] [  -- ] [  File ...  |  - ]
  
  Description
  
  The neqn command is an nroff preprocessor for formatting
  mathematical  text on typewriter-like terminals.  Pipe the output
  of the neqn command into the nroff command as follows:
  
  neqn [Flag...] File... | nroff [Flag...] | [Printer]
  
  The neqn command reads one or more files.  If no files are speci-
  fied for the File parameter or the - (minus sign) flag is speci-
  fied as the last parameter, standard input is read by default.  A
  line beginning with the  .EQ macro marks the start of equation
  text.    The  end  of equation text is marked by a line beginning
  with the  .EN macro.  These lines are not altered by the nroff
  command, so they can be defined in macro packages to provide ad-
  ditional formatting functions such as centering and numbering.
  
  The -- (double dash) delimiter indicates the end of flags.
  
  Depending on the target output devices, neqn command output for-
  matted by the nroff command may need to be post-processed by the 
  col command to produce correct output.
  
  The  eqn command gives more information about the input format
  and keywords used.
  
  Flags
  
  -dDelimiter1Delimiter2	Sets two ASCII characters, Delimiter1 and
  Delimiter2, as delimiters of the text to be processed by the neqn
  command, in addition to input enclosed by the .EQ and .EN macros.
  The text between these delimiters is treated as input to the neqn
  command.
  
  Within a file, you can also set delimiters for neqn text using
  the delim Delimiter1Delimiter2 request.  These delimiters are
  turned off by the delim off request.  All text that is not
  between delimiters or the  .EQ macro and  .EN macro is passed
  through unprocessed.
  
  -fFont	Changes font in all the neqn command-processed text to the
  value specified by the Font variable.  The Font value (a font
  name or position) must be one or two ASCII characters.
  
  -pNumber	Reduces subscripts and superscripts to the specified
  number of points in size.  The default is 3 point.
  
  -sSize	Changes point size in all the neqn command-processed text
  to the value specified by the Size variable.
  
  -	Reads from standard input.
  
  --	(double dash) Marks the end of the flags.
  
  Implementation Specifics
  
  This command is part of Formatting Tools in the Text Formatting
  System.
  
  Files
  
  /usr/share/lib/pub/eqnchar	Contains special character defini-
  tions.
  
  Related Information
  
  The  checkeq command,  col command,  eqn command,  mm command, 
  nroff command,  tbl command.
  
  The  .EN macro,  EQ macro,  mm macro.
  
  The  eqnchar file format.