neqn.1 (2010 09)

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neqn(1) neqn(1)

Verbatim Text

Strings enclosed in double quotes ("

string") are passed through untouched; this permits keywords to be

entered as text, and can be used to communicate with nroff when other methods fail. Details are given

in the manuals cited below.

Options

neqn accepts the following options:

-dxy

Deﬁne the characters x and y as the start and end in-text delimiter characters. See the Delimiters

subsection.

-fn Change the font number globally for the output equations in the document to n. See the Point Sizes

and Fonts subsection.

-pn Reduce subscript and superscript point sizes by n points from the normal size. See the Point Sizes

and Fonts subsection.

-sn Change the point size globally for the output equations in the document to n. See the Point Sizes

and Fonts subsection.

Operands

file A ﬁle to be processed for

neqn constructs. If no ﬁle is speciﬁed,

neqn reads from standard input.

If a ﬁle is speciﬁed as

-, neqn reads from standard input at that point in the sequence of ﬁles.

EXTERNAL INFLUENCES

Environment Variables

LC_CTYPE determines the interpretation of text as single- or multibyte characters.

LANG determines the language in which messages are displayed.

LC_CTYPE is not speciﬁed in the environment or is set to the empty string, the value of

LANG is used

as a default for each unspeciﬁed or empty variable. If

LANG is not speciﬁed or is set to the empty string,

a default of "C" (see lang (5)) is used instead of LANG. If any internationalization variable contains an

invalid setting, neqn behaves as if all internationalization variables are set to "C". See environ (5).

International Code Set Support

Single- and multibyte character code sets are supported.

WARNINGS

To embolden digits, parentheses, etc., it is necessary to quote them, as in

bold "12.3"

. Also see the

WARNINGS section in nroff(1).

Good practice dictates that if a delimiter is speciﬁed in a ﬁle, the

delim off directive should be

included at the end of the ﬁle to prevent undesirable behavior when processing multiple ﬁles where a

subsequent ﬁle may contain the delimiter character as part of regular text.

To properly display equations on terminal screens and other devices that do not support reverse line

feeds,

nroff output should be piped through col (see col (1)).

The display on devices that do not support partial line feeds is often difﬁcult to understand; Greek char-

acters and other symbols are often not well supported and can mismatched printing of bold words on the

same line (see a printed version of the Other Keywords subsection above). Consider using "computer-

program" coding instead.