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-<HTML>
-
-<!------------------------------------------------------------------------>
-
-<HEAD>
-<TITLE>Package mathenv</TITLE>
-</HEAD>
-<BODY >
-
-<!------------------------------------------------------------------------>
-<P>
-
-<H1 ALIGN="CENTER">
-Package <TT>mathenv</TT><BR>
-<SMALL>
-This is version 2.2, last revised 1998/02/04; documentation date 1998/02/06.
-</SMALL>
-</H1>
-
-<P ALIGN="CENTER">
-<STRONG>
-Author: <I>F. Bosisio</I><BR>
-<SMALL>
-E-mail: <A HREF="MAILTO:bosisio@mate.polimi.it">
- <TT>bosisio@mate.polimi.it</TT>
- </A><BR>
-Web page: <A HREF="http://ftp.mate.polimi.it/~bosisio/LaTeX">
- <TT>http://ftp.mate.polimi.it/~bosisio/LaTeX</TT>
- </A><BR>
-CTAN location: <A HREF="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/supported/bosisio/">
- <TT>CTAN:macros/latex/contrib/supported/bosisio/</TT>
- </A>
-</SMALL>
-</STRONG>
-</P>
-
-<P ALIGN="LEFT"></P>
-
-<!------------------------------------------------------------------------>
-<P>
-
-<H3>Abstract</H3>
-<DIV>
-Documentation for the package <TT>mathenv</TT>.
-</DIV>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H2>Table of contents</H2>
-
-<P>
-<UL> <!-- Beginning of list -->
- <LI><A HREF="#SECTION01">Introduction</A>
- <LI><A HREF="#SECTION02">The options</A>
- <LI><A HREF="#SECTION03">Math-mode environments</A>
- <UL> <!-- Beginning of sublist -->
- <LI><A HREF="#SECTION03a">The <TT>Equation</TT> environment</A>
- <LI><A HREF="#SECTION03b">The <TT>MultiLine</TT> equation environment</A>
- <LI><A HREF="#SECTION03c">The <TT>System</TT> environment</A>
- <LI><A HREF="#SECTION03d">The <TT>EqSystem</TT> environment</A>
- </UL> <!-- End of sublist -->
- <LI><A HREF="#SECTION04">Math-mode commands</A>
-</UL> <!-- End of list -->
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H2>
-<A NAME="SECTION01">Introduction</A>
-</H2>
-
-<P>
-This package provides some useful math-commands and enviroments, which
-are simpler to use and prettier then their standard LaTeX counterpart.
-</P>
-
-<P>
-In particular some commands are redefined
-(see <A HREF="#SECTION02">next section</A> if you don't want them to be
-redefined), so care should be taken, expecially when including this package
-in an already existent LaTeX file.
-
-<P>
-The <A HREF="#SECTION04">redefined commands</A> are:<BR>
-<TT>\(</TT>, <TT>\)</TT>,
-<TT>\[</TT>, <TT>\]</TT>,
-<TT>\{</TT> and <TT>\}</TT>.<BR>
-The effect of ``<TT>\(</TT> ...<TT>\)</TT>'' can still be achieved by
-the LaTeX equivalent commands ``<TT>\begin{math} ... \end{math}</TT>''
-or ``<TT>$...$</TT>''.
-</P>
-
-<P>
-Similarly, the effect of ``<TT>\[...\]</TT>'' can be achieved by the
-LaTeX equivalent commands
-``<TT>\begin{displaymath}...\end{displaymath}</TT>'' or
-``<TT>$$...$$</TT>''.
-</P>
-
-<P>
-The ``<TT>\{</TT>'' and ``<TT>\}</TT>'' commands are the more
-error-prone, since one may try to use ``<TT>\left\{</TT>'', which now
-is incorrect, because the ``<TT>\{</TT>'' command already contains a
-``<TT>\left</TT>'' declaration.
-In the rare occasions where a brace of normal size is needed, one can use
-the LaTeX commands ``<TT>\lbrace</TT>'' and ``<TT>\rbrace</TT>''.
-</P>
-
-<P>
-Also the <A HREF="#SECTION03a">``<TT>equation</TT>'' environment</A> has been
-changed, but it is completly compatible with the original definition, so it
-should be safe, perhaps except when the first character of the equation is
-an open square bracket or it is placed in a moving argument:
-in fact, the new version of this command is fragile, and this is true also
-for most of the commands defined by this package.
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H2>
-<A NAME="SECTION02">The options</A>
-</H2>
-
-<P>
-At now, five options are available with the <TT>mathenv</TT> package.
-</P>
-
-<P>
-The ``<TT>RedefEquation</TT>''/``<TT>StdEquation</TT>'' and
-``<TT>RedefBrackets</TT>''/``<TT>StdBrackets</TT>'' options control
-whether the ``<TT>equation</TT>'' environment and the brace commands
-``<TT>\(</TT>'', ``<TT>\)</TT>'', ``<TT>\[</TT>'',
-``<TT>\]</TT>'', ``<TT>\{</TT>'' and ``<TT>\}</TT>'' should
-be redefined or retain their original LaTeX meaning.
-</P>
-
-<P>
-More precisely, ``<TT>RedefEquation</TT>'' (default) redefines the
-``equation'' environment to have an optional argument (used as a label),
-while ``<TT>StdEquation</TT>'' leaves it unchanged.
-In the first case, the ``equation'' environment will be equivalent to the
-<A HREF="#SECTION03a">``Equation'' environment</A> (capitalized!) described
-below, whereas in the second case they will be different.
-</P>
-
-<P>
-Similarly, the ``<TT>RedefBrackets</TT>'' option (default) makes the
-<A HREF="#SECTION04"> bracket commands</A> to be redefined, whilst
-``<TT>StdBrackets</TT>'' leave them their original meaning.
-</P>
-
-<P>
-Also a ``<TT>Standard</TT>'' option exists, which amounts to specify both
-the ``<TT>StdEquation</TT>'' and ``<TT>StdBrackets</TT>'' options, thus making
-the package fully standard, which may be useful when sending your
-LaTeX files to someone else.
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H2>
-<A NAME="SECTION03">Math-mode environments</A>
-</H2>
-
-<P>
-This package provides some math-mode environments, each with a ``*-form''
-which does not generates numbers (or produce sub-numbering).
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H3>
-<A NAME="SECTION03a">The <TT>Equation</TT> environment</A>
-</H3>
-
-<P>
-The ``<TT>Equation</TT>'' environment has an optional argument which is used
-as a label to reference it.
-<PRE>
- \begin{Equation}[&lt;label&gt;]
- ...
- \end{Equation}
-</PRE>
-</P>
-
-<P>
-If the ``<TT>RedefEquation</TT>'' option is in effect (default), then
-the ``<TT>equation</TT>'' environment is redefined to have the same optional
-argument as ``<TT>Equation</TT>''.
-</P>
-
-<P>
-There is also a *-form, which does not generate a number (so this *-form is
-really a ``displaymath'' and not an equation, but it has been added for
-simmetry and for making it easier to add or remove the number to a formula).
-</P>
-
-<P>
-The *-form has an optional argument like the non-* form, which is
-disregarded by the environment and is added only for simmetry reasons.
-<PRE>
- \begin{equation*}[&lt;disregarded-label&gt;]
- ...
- \end{equation*}
-</PRE>
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H3>
-<A NAME="SECTION03b">The <TT>MultiLine</TT> equation environment</A>
-</H3>
-
-<P>
-The ``<TT>MultiLine</TT>'' environment is intended for formulas that don't
-fit on a single line, and so must be broken across lines.
-</P>
-
-<P>
-As for the <A HREF="#SECTION03a"><TT>Equation</TT> environment</A> above,
-it has an optional argument which is used as a label.
-</P>
-
-<P>
-All the lines but the first are automatically indented by the lenght
-``<TT>\MultiLineIndent</TT>'', which is rougthly what one expects, but
-can be changed at any time by the user with
-``<TT>\setlenght\MultiLineIndent{...}</TT>''.
-You can also control the alignment of the continuation rows by placing an
-optional <TT>&amp;</TT> in the first row: is such a case all the others line
-will <EM>not</EM> be indented by ``<TT>\MultiLineIndent</TT>'' but wil behave
-<EM>as if</EM> there were an ampersand in front of them (i.e. they will be
-left-aligned at the right of the &amp; in the first row).
-</P>
-
-<P>
-Each line but the last must end with a ``<TT>\\</TT>'' command
-(which can have an optional argument to add some vertical space between
-lines).
-When the line is broken in the middle (e.g. after a ``+'' sign) and not at
-the end (i.e. after a ``='' or similar), the *-form ``<TT>\\*</TT>''
-may be used to indicate the line-break, the difference being in an extra
-space added at the beginning of the next line.
-The width of a this space defaults to 1em and can be changed by the user
-with ``<TT>\setlenght\MultiLineStarIndent{...}</TT>''.
-</P>
-
-<P>
-<PRE>
- \begin{MultiLine}[&lt;label&gt;]
- ... [&amp;]= ... = \\
- = ... + \\*
- + ... = \\
- = ...
- \end{MultiLine}
-</PRE>
-</P>
-
-<P>
-Also this environment has a *-form which differs only in that it does not
-generate an equation number.
-<PRE>
- \begin{MultiLine*}[&lt;disregarded-label&gt;]
- ... [&amp;]= ... = \\
- = ... + \\*
- + ... = \\
- = ...
- \end{MultiLine*}
-</PRE>
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H3>
-<A NAME="SECTION03c">The <TT>System</TT> environment</A>
-</H3>
-
-<P>
-The ``<TT>System</TT>'' environment is used for grouping a set of equations
-together inside a left brace, with one only equation number.
-</P>
-
-<P>
-Again there is an optional argument to indicate a label and each equation
-is separated by a ``<TT>\\</TT>'' or ``<TT>\\*</TT>'' command,
-as for the <A HREF="#SECTION03b">``<TT>MultiLine</TT>'' environment</A>.
-</P>
-
-<P>
-The rows (except the ones ended with the *-form ``<TT>\\*</TT>'')
-may optionally contain one ``<TT>&amp;</TT>'', which is usually used when
-some text should be added to the equation.
-<PRE>
- \begin{System}[&lt;label&gt;]
- ... = ... [&amp; ...] \\
- ... = ... + \\*
- + ... [&amp; ...] \\
- ... = ... [&amp; ...]
- \end{System}
-</PRE>
-</P>
-
-<P>
-A *-form which does not generate any number is also provided.
-<PRE>
- \begin{System*}[&lt;disregarded-label&gt;]
- ... = ... [&amp; ...] \\
- ... = ... + \\*
- + ... [&amp; ...] \\
- ... = ... [&amp; ...]
- \end{System*}
-</PRE>
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H3>
-<A NAME="SECTION03d">The <TT>EqSystem</TT> environment</A>
-</H3>
-
-<P>
-The ``<TT>EqSystem</TT>'' environment is used for grouping a set of equations
-together inside a left brace, each with its own equation number.
-</P>
-
-<P>
-Again there is an optional argument to indicate a label and each equation is
-separated by a ``<TT>\\</TT>'' or ``<TT>\\*</TT>'' command.
-</P>
-
-<P>
-The rows may optionally contain one ``<TT>&amp;</TT>'', which is usually used
-when some text should be added to the equation.
-<PRE>
- \begin{EqSystem}[&lt;label&gt;]
- ... = ... [&amp; ...] \\ % (1.1)
- ... = ... + \\* %
- + ... [&amp; ...] \\ % (1.2)
- ... = ... [&amp; ...] % (1.3)
- \end{EqSystem}
-</PRE>
-</P>
-
-<P>
-A *-form is also provided: it differs in that each equation is numbered with
-the same number but with a lowercase letter added, i.e. like (1.1a), (1.1b),
-etc. instead of (1.1), (1.2) and so on.
-<PRE>
- \begin{EqSystem*}[&lt;label&gt;]
- ... = ... [&amp; ...] \\ % (1.5a)
- ... = ... + \\* %
- + ... [&amp; ...] \\ % (1.5b)
- ... = ... [&amp; ...] % (1.5c)
- \end{EqSystem*}
-</PRE>
-In both cases, if the optional argument is present, each equation can be
-referenced by <TT>\ref{&lt;label&gt;:a}</TT>,
-<TT>\ref{&lt;label&gt;:b}</TT>, ..., where <TT>&lt;label&gt;</TT>,
-stands for the string used as optional argument.
-In the case of the *-form, a reference of the kind
-<TT>\ref{&lt;label&gt;}</TT> will print the equation number without
-any letter, thus referring to the system as a whole, whereas such a
-reference is meaningless (and indeed does not exists) when dealing with
-the non *-form.
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<H2>
-<A NAME="SECTION04">Math-mode commands</A>
-</H2>
-
-<P>
-In addition to the previously mentioned environments, the <TT>mathenv</TT>
-package defines also some of math-mode commands which considerably simplify
-the use of adjustable-size parentheses.
-</P>
-
-<P>
-The ``<TT>\(</TT>'', ``<TT>\[</TT>'', ``<TT>\{</TT>'',
-``<TT>\)</TT>'', ``<TT>\]</TT>'' and ``<TT>\}</TT>'' generates
-the corresponding parenthesis but with a ``<TT>\left</TT>'' or
-``<TT>\right</TT>'' declaration (respectively) added, so they must come
-in matched pairs or coupled with a ``<TT>\left.</TT>'' or
-``<TT>\rigtht.</TT>'' or another adjustable-size delimiter.
-</P>
-
-<HR><BR>
-<!------------------------------------------------------------------------>
-
-<ADDRESS>
-<I>Francesco Bosisio</I><BR>
-E-mail: <A HREF="MAILTO:bosisio@mate.polimi.it">
- <TT>bosisio@mate.polimi.it</TT>
- </A><BR>
-Web page: <A HREF="http://ftp.mate.polimi.it/~bosisio/LaTeX">
- <TT>http://ftp.mate.polimi.it/~bosisio/LaTeX</TT>
- </A>
-</ADDRESS>
-
-<!------------------------------------------------------------------------>
-
-</BODY>
-</HTML>
-