EQN, NEQN, CHECKEQ(1,C)     AIX Commands Reference      EQN, NEQN, CHECKEQ(1,C)



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eqn, neqn, checkeq



PURPOSE

Formats mathematical text for the nroff and troff commands.

SYNTAX


 one of
+------+   +-------------------+   +--------+
| eqn  |---| +---------------+ |---|        |---|
| neqn |   +-| -dxy   -pnum  |-+   +- file -+
+------+    ^| -ssize -ffont ||     ^      |
            |+---------------+|     +------+
            +-----------------+

           +--------+
checkeq ---|        |---|
           +- file -+
            ^      |
            +------+


DESCRIPTION

The eqn command is a troff command preprocessor for typesetting mathematical
text on a photo typesetter.  The neqn command is used with nroff for other
printing devices.  The output of the eqn and neqn command is generally piped
into the troff and nroff command as follows:

  eqn file | troff
  neqn file | nroff

If you do not specify any files or if you specify - as the last file name, the
commands read standard input.  A line consisting of .EQ marks the start of
equation text; a line consisting of .EN marks the end of equation text.
Neither of these lines is altered by the commands, so they can be defined in
macro packages to give you centering and numbering.  The program checkeq
reports missing or unbalanced delimiter pairs and .EQ/.EN pairs.  For
information on how to format eqn text, see in the AIX Text Formatting Guide.

The eqn command recognizes the following mathematical words and prints the
associated symbol:

above            dotdot          italic          rcol            to
back             down            lcol            right           under
bar              dyad            left            roman           up
bold             fat             lineup          rpile           vec



Processed November 8, 1990  EQN, NEQN, CHECKEQ(1,C)                           1

EQN, NEQN, CHECKEQ(1,C)     AIX Commands Reference      EQN, NEQN, CHECKEQ(1,C)



ccol             font            lpile           rpile           ~
col              from            mark            size            ^
cpile            fwd             matrix          sub             {}
define           gfont           ndefine         sup             "..."
delim            gsize           over            tdefine
dot              hat             pile            tilde

FLAGS

-dxy     Sets x and y as one character delimiters of the text to be processed
         by the eqn command, in addition to the .EQ and .EN macros.  The text
         between these delimiters will be treated as input to the eqn command.

         Note:  Within a file, you can also set delimiters for eqn command text
                by using the command delim xy.  The delimiters are turned off
                by the command delim off.  All text that is not between
                delimiters or .EQ and .EN is passed through unprocessed.

-ffont   Acts the same as -s for fonts.  See the discussion of gfont and font
         in Text Formatting Guide for information on changing font within the
         text.

-pnum    Reduces subscripts and superscripts num points in size (the default is
         3).

-ssize   Changes point size in all text processed by the eqn command to size.
         See the discussion of gsize and size in the AIX Text Formatting Guide
         for information on changing the point size within the text.

RELATED INFORMATION

See the following commands:  "cw, checkcw,"  "mm, checkmm,"  "mmt, mant, mvt,"
and "nroff, troff."

See the eqnchar and mv miscellaneous facilities in AIX Operating System
Technical Reference.

See the discussion of eqn in the AIX Text Formatting Guide.

















Processed November 8, 1990  EQN, NEQN, CHECKEQ(1,C)                           2