All commands, alphabetic order; letter O
This page contains the description of \o, \O, \oast, \obar, \obeylines, \obeyspaces, \oblong, \ocircle, \oddsidemargin, \odot, \oe, \OE, \of, \offinterlineskip, \og, \ogreaterthan, \oint, \oldstylenums, \olessthan, \omega, \Omega, \ominus, \omit, \omitcite, \@ne, \on@line, \onecolumn, \@onlypreamble, \openin, \openout, \operatorname, \operatornamewithlimits, \oplus, \OptionNotUsed, \or, \OR, \oslash, \otimes, \outer, \output, \outputpenalty, \oval, \over, \overbrace, \overfullrule, \overleftarrow, \overleftrightarrow, \overline, \overrightarrow, \overset, \overwithdelims, \owns.
\o (constant)
The \o command translates to a letter o with stroke, ø or
ø. See description of the latin supplement
characters.
\O (constant)
The \O command translates to a capital letter o with stroke, Ø or
Ø. See description of the latin supplement
characters.
\oast (math symbol)
The \oast command is an alias for
`\circledast <doc-c.html#cmd-circledast>`__ (Unicode U+229B; ⊛).
\obar (constant)
The \obar command is valid only in math mode. It generates
<mo>⦶</mo> (Unicode U+29B6, ⦶).
\obeylines
This commands makes the end-of-line character (control-M) active and
behave like \par.
\obeyspaces
This commands makes the space character active.
\oblong (math symbol)
The \oblong command is an alias for
`\square <doc-s.html#cmd-square>`__ (Unicode U+25A1, □).
\ocircle (math symbol)
The \ocircle command is an alias for
`\circledcirc <doc-c.html#cmd-circledcirc>`__ (Unicode U+229A, ⊚) (a
circle in a circle).
\oddsidemargin (rigid length)
This is a dimension, defined by LaTeX, but unused by Tralics.
\odot (math symbol)
The \odot command is valid only in math mode. It generates a binary
operator: <mo>⊙</mo> (Unicode U+2299, ⊙). See description of
the `\pm <doc-p.html#cmd-pm>`__ command.
\oe (constant)
The \oe command translates to an oe ligature (character U+153, œ).
See description of the extended latin
characters.
\OE (constant)
The \OE command translates to an uppercase oe ligature (Unicode
U+152, Œ) See description of the extended latin
characters.
\of
The \of command is undefined. However you say \root 3 \of 4 if
you do not like the LaTeX syntax \sqrt[3]{4}.
\offinterlineskip
The \offinterlineskip command is ignored. In LaTeX, it sets
\prevdepth to a magic value that inhibits insertion of interline
glue, it sets \lineskip to zero and \lineskiplimit to the
maximum possible value.
\og (constant)
The \og command stands for “ouvrez-les-guillemets”. It is more or
less the same as «. Translation is « . For more info
see the latin supplement characters.
\ogreaterthan (math symbol)
The \ogreaterthan command is valid only in math mode. Its
translation is <mo>⧁</mo> (Unicode U+29C1, ⧁).
\oint (constant)
The \oint command is valid only in math mode. Its translation is a
variable-sized symbol: <mo>∮</mo> (Unicode U+222E, ∮). For an
example see the `\sum <doc-s.html#cmd-sum>`__ command.
\oldstylenums
The \oldstylenums command takes an argument and puts it in a
<hi> element.
\begin{center}
1234567890 \\
\oldstylenums{1234567890}
\end{center}
<p rend='center'>1234567890 </p>
<p rend='center'><hi rend='oldstyle'>1234567890</hi></p>
The preview might be the following. This is not perfect:
.
\olessthan (math symbol)
The \olessthan command is valid only in math mode. Its translation
is <mo>⧀</mo> (Unicode U+29C0, ⧀).
\omega (math symbol)
The \omega command is valid only in math mode. It generates a Greek
letter: <mi>ω</mi> (Unicode U+3C9, ω). See description of the
`\alpha <doc-a.html#cmd-alpha>`__ command.
\Omega (math symbol)
The \Omega command is valid only in math mode. It generates an
uppercase Greek letter: <mi>Ω</mi> (Unicode U+3A9, Ω). See
description of the `\alpha <doc-a.html#cmd-alpha>`__ command.
\ominus (constant)
The \ominus command is valid only in math mode. It generates a
binary operator: <mo>⊖</mo> (Unicode U+2296, ⊖). See
description of the `\pm <doc-p.html#cmd-pm>`__ command.
\omit
The \omit command has as effect to omit the template of a cell in a
table. This command is a primitive for \halign. For the tabular
environment, you should use \multicolumn{1}{xx}{yy} instead, where
xx is the desired template and yy the text.
Since \halign is not implemented, the \omit command provokes an
error in the current version of Tralics.
\omitcite [Tralics command]
The effect of \omitcite{something} is to omit the reference given as
arguemnt from the bibliography. It is useful in the case of
\nocite{*}. For further details, see the omitcite.tex file is the
Tralics sources.
\@ne
This command is made equal to the integer one, via \chardef (use it
only in contexts where an integer is expected). For an example, see
`\m@ne <doc-m.html#cmd-m@ne>`__.
\onecolumn
This command is currently ignored.
\on@line
The \on@linecommand can be used when signaling error; its
expansion could be on input line 17.
\@onlypreamble
If you say \@onlypreamle{\foo}, then the \begin{document}
modifies the definition of \foo, provoking an error: Can be used
only in preamble.
\openin
\openin 5=name, where the number 5 could be replaced
by any number between 0 and 15, the equals sign is optional, and the
file name is scanned like \input (the TeX primitive).If a file is associated to the channel, it will be closed (in the same
fashion as by \closein). Nothing special happens if the file cannot
be opened. Otherwise, you can use \read to read from the the file
associated to the channel.
Let’s assume that the file tortureaux.tex contains the following six lines (the second and the last lines are blank).
abc
\a \b {\c
{} \d} \e
123
The following code assume that \testeq XY will signal an error if
arguments are not equal. Note that the second \read reads the empty
line; it is really empty because \endlinechar is not an integer
between 0 and 216-1. The \read that follows will read two
lines, because braces have to match.
{
\openin 5=tortureaux
\endlinechar=-1
\ifeof5 \badifeofatentry\fi
\read 5 to \foo\testeq\foo{abc}
\read 5 to \foo\testeq\foo{}
\read 5 to \foo\testeq\foo{\a\b{\c{} \d} \e}
\global\read 5 to \foo
\closein5\relax
\ifeof5\else\badifeofatexit\fi
}\testeq\foo{123}
\ifeof3\else \badifeofnonexists\fi
\openout
You can say \openout 5=name, where the number 5 could be replaced by
any number between 0 and 15 (see scanint
for details). This closes any file attached to the output channel 5. It
opens the file name for output (if the file exists, it content will
be lost). In case of success, it marks the output channel as open
(otherwise, it is closed).
The channel can be closed by \closeout, and you can write on it via
\write. These three commands are whatsits: objects that are not
immediately evaluated, but only when the box in which they are contained
is shipped out, unless they are preceded by \immediate, case where
the action is immediate. In Tralics, the \shipout command is never
called, so that these actions are always immediate.
One reason why \immediate is needed is so that \write5{\thepage}
prints the right page number.
You can say \typeout{foo}, this is the same as \write 17{foo}.
If you say \write N{list}, all tokens in the list are expanded, and
the token list is printed. In case N refers to a valid output channel
(associated to a file), printing goes to the file associated to this
channel. Otherwise, output goes to the user’s transcript file and to the
terminal. Output is restricted to the transcript file if N is negative.
In the case where N=18, and Tralics is called with the –shell-escape option, then output goes to a shell, and is executed as an external Unix program (this depends on the operating system).
\operatorname
This command can be used in math mode only, and \operatorname{sin}
has the same meaning as \sin. There are some restrictions on the
arguments: only characters are allowed. Since the LaTeX companion cites
an example of the form \operatorname{ess\,sup}, commands that
produce a space are accepted; spaces are otherwise ignored. When you say
\DeclareMathOperator{\Sin}{sin}, this defines a command whose
meaning is \operatorname{sin}. These two commands accept a starred
form, see example
\DeclareMathOperator{\Sin}{sin}
\DeclareMathOperator*{\Limsup}{lim \, sup}
$\Sin = \sin = \operatorname{sin} $
$\Limsup = \limsup = \operatorname*{lim\;sup} $
Translation
<formula type='inline'>
<math xmlns='http://www.w3.org/1998/Math/MathML'>
<mrow>
<mo form='prefix'>sin</mo>
<mo>=</mo>
<mo form='prefix'>sin</mo>
<mo>=</mo>
<mo form='prefix'>sin</mo>
</mrow>
</math>
</formula>
<formula type='inline'>
<math xmlns='http://www.w3.org/1998/Math/MathML'>
<mrow>
<mo movablelimits='true' form='prefix'>lim sup</mo>
<mo>=</mo>
<mo movablelimits='true' form='prefix'>lim sup</mo>
<mo>=</mo>
<mo movablelimits='true' form='prefix'>lim sup</mo>
</mrow>
</math>
</formula>
\operatornamewithlimits
This is the same as \operatorname*, see above.
\OptionNotUsed
This is the default handler for package and class options. In the case of a package, the option is ignored, in the case of a class the option is added to the list of global options. You can redefine the command if the default behavior is not adequate.
\oplus (math symbol)
The \oplus command is valid only in math mode. It generates a binary
operator: <mo>⊕</mo> (Unicode U+2295, ⊕). See description of
the `\pm <doc-p.html#cmd-pm>`__ command.
\or
The command \or is usually used to separate clauses inside an
\ifcase construct. It can be used as boolean connector inside
conditionals defined by `\ifthenelse <doc-i.html#cmd-ifthenelse>`__.
(See \if… for details).
\OR
It can be used as boolean connector (equivalent to \or) inside
conditionals defined by `\ifthenelse <doc-i.html#cmd-ifthenelse>`__.
\oslash (math symbol)
The \oslash command is valid only in math mode. It generates a
binary operator: <mo>ø</mo> (Unicode U+2298, ⊘). See
description of the `\pm <doc-p.html#cmd-pm>`__ command.
\otimes (math symbol)
The \otimes command is valid only in math mode. It generates a
binary operator: <mo>⊗</mo> (Unicode U+2297, ⊗). See
description of the `\pm <doc-p.html#cmd-pm>`__ command.
\outer
\outer\def\foo..... This defines the \foo command
to be \outer, and this makes \foo behave like an end-of-file
in many situations, for instance used as as argument of \xx, it
will signal an error of the form Runaway argument? Forbidden control
sequence \foo found while scanning use of \xx. A test done by
\ifx is false if one command is \outer and the other is not.
See also the `\long <doc-l.html#cmd-long>`__ command.\output
The result of \output={\foo}\the\output\the\output is the same
\foo\foo. It is however unwise in TeX to use \output like this;
in fact, whenever a page is full, TeX puts it in \box255 and
evaluates the tokens of \output. After that, the box should be
empty. On the other hand \deadcycles is increased (it is set to zero
by \shipout). Since Tralics does not create pages of text, the
output routine is never called, and \deadcycles is not modified.
\outputpenalty (internal integer)
\outputpenalty integer variable; however, TeX
does not use it, it modifies it: it holds the value of the penalty
that was at a page break (or 10000 otherwise). Unused by Tralics.
Used a lot by LaTeX. (See scanint for details of
argument scanning).\oval
You say \oval(dx,dy)[part] in order to put oval into a picture. See
description of the `picture <doc-p.html#env-picture>`__ environment
for the syntax of the (dx,dy) part, and some examples. In general,
the \oval is the argument of a \put(x,y){} command, and the
(x,y) positions indicate the center of a rectangle, of size dx
by dy, in which the oval should be drawn. If [part] is given,
only part of the oval is drawn: the part can be t, b, l, r (top, bottom,
left, right), or two such letters (tl means top left).
\over
The \over command is a TeX primitive that should not be used in
LaTeX. It is better to use \frac instead. We give here an example of
\over and its variants. A construction like a \over b \over c is
illegal in TeX. It generates an error in Tralics. In the case of
{a \choose b} \quad {a\over b} \above1pt{c\over d} the numerator
contains the \choose and the \over. This was not the intent of
the author of the code. This is one reason why \over commands and
such are discouraged. Example:
${a\over b}\quad {a\above1pt b}\quad {a\atop b}$
${a\overwithdelims() b}\quad {a\abovewithdelims()1pt b}%
\quad {a\atopwithdelims() b}$
<formula type='inline'><math xmlns='http://www.w3.org/1998/Math/MathML'><mrow>
<mfrac><mi>a</mi> <mi>b</mi></mfrac>
<mspace width='1.em'/>
<mfrac linethickness='1pt'><mi>a</mi> <mi>b</mi></mfrac>
<mspace width='1.em'/>
<mfrac linethickness='0.0pt'><mi>a</mi> <mi>b</mi></mfrac>
</mrow></math></formula>
<formula type='inline'><math xmlns='http://www.w3.org/1998/Math/MathML'><mrow>
<mfenced open='(' close=')'><mfrac><mi>a</mi> <mi>b</mi></mfrac></mfenced>
<mspace width='1.em'/>
<mfenced open='(' close=')'><mfrac linethickness='1pt'><mi>a</mi> <mi>b</mi></mfrac></mfenced>
<mspace width='1.em'/>
<mfenced open='(' close=')'><mfrac linethickness='0.0pt'><mi>a</mi> <mi>b</mi></mfrac></mfenced>
</mrow></math></formula>
Preview 
(see also here)
\overbrace
\overbrace command puts an horizontal brace over a kernel. It
works only in math mode. Example: 
. See also the `\acute <doc-a.html#cmd-acute>`__ command.\overfullrule (rigid length)
\overfullrule=5pt, as a result TeX will insert a rule
of width 5pt at the end of each overfull rule. This is set to 0pt by
LaTeX, ignored by Tralics. (See scandimen for details of
argument scanning).\overleftarrow
\overleftarrow command puts an arrow accent (Unicode character
U+2190, ←) (pointing to the left) over a kernel. Example:
. It works only in math mode. See also the `\acute <doc-a.html#cmd-acute>`__ command.\overleftrightarrow
The \overleftrightarrow command puts an arrow accent (pointing to
the left and right) over a kernel. (Unicode character U+2194, ↔) It
works only in math mode.
\overline
The \overline command puts a line over a kernel. It works only in
math mode. See also the `\acute <doc-a.html#cmd-acute>`__ command.
\overrightarrow
The \overrightarrow command puts an arrow accent (Unicode character
U+2192, →) (pointing to the right) over a kernel. Example:
. It works only in math mode. See also the
`\acute <doc-a.html#cmd-acute>`__ command.
\overset
The \overset command takes two arguments A and B, it places A
(superscript size) over B. It works only in math mode. See also the
`\acute <doc-a.html#cmd-acute>`__ command.
\overwithdelims
\overwithdelims command is a TeX primitive that should not be
used. Instead of aa \overwithdelims()bb you should use
\genfrac(){}{}{aa}{bb}. See `\genfrac <doc-g.html#cmd-genfrac>`__ and
`\over <doc-o.html#cmd-over>`__.\owns (math symbol)
The \owns command is equivalent to \ni. It gives a normal symbol
<mo>∋</mo> (Unicode U+220B, ∋). See also description of the
`\smallint <doc-s.html#cmd-smallint>`__ command.