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-%%
-%% This is file `delex.tex',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% deleq.dtx  (with options: `exempelkod')
-%% 
-%% 
-%% Copyright (c) 1994-97 by Mats Dahlgren <matsd@homenet.se>.
-%% All rights reserved.  See the file `deleq.ins' for information
-%% on how you may (re-)distribute the `deleq' package files.
-%% 
-\documentclass[11pt]{article} %%% add `leqno' if you want left-aligned
-\usepackage{deleq}            %%% equation numbers and `fleqn' to
-\oddsidemargin=0.5cm          %%% flush the equations left.
-\evensidemargin=0.5cm
-\topmargin=-5mm
-\textheight=23.5cm
-\textwidth=15.5cm
-\begin{document}
-  \begin{center}
-  \Large Welcome to the \textsf{deleq} package!
-  \end{center}
-
-  This is a short document to demonstrate the use of the
-  \textsf{deleq} package and its commands.  It uses \deleqver .
-  \textsf{deleq} was written by Mats Dahlgren
-  (\texttt{matsd@physchem.kth.se}).  Suggestions for
-  improvements and bug reports are most welcome, see the
-  documentation.  \textsf{deleq} is fully compatible with the
-  \texttt{leqno} option and most of the \texttt{fleqn} option.
-
-  We start this demonstration by a simple and well-known
-  equation to get the equation number counter going:
-  \begin{equation}
-    \sin^2\alpha + \cos^2\alpha = 1
-  \end{equation}
-  The first example will be to make use of the
-  \texttt{deqn} environment to get a partially numbered
-  equation:
-  \begin{deqn}
-    \sin (-\alpha) = - \sin \alpha
-  \end{deqn}
-  This equation has its cosine companion, here written in
-  the \texttt{ddeqn} environment:
-  \begin{ddeqn}
-    \cos (-\alpha) = \cos \alpha
-  \end{ddeqn}
-  Not so exciting, so far. :--)
-
-  In the next example we introduce the \texttt{deqarr}
-  environment for writing equations:
-  \begin{deqarr}
-    \sin ( \alpha + \beta ) & =
-      & \sin \alpha \cos \beta + \sin \beta \cos \alpha \\
-    \sin ( \alpha - \beta ) & =
-      & \sin \alpha \cos \beta - \sin \beta \cos \alpha
-    \label{Demo1}
-  \end{deqarr}
-  where we also have put in the label \texttt{Demo1} in
-  the second equation. Next, notice how the environment
-  \texttt{ddeqar} uses the same main equation number as
-  the previous equations:
-  \begin{ddeqar}
-    \cos ( \alpha + \beta ) & =
-      & \cos \alpha \cos \beta - \sin \alpha \sin \beta
-      \arrlabel{Demo2} \\
-    \cos ( \alpha - \beta ) & =
-      & \cos \alpha \cos \beta + \sin \alpha \sin \beta
-  \end{ddeqar}
-  In the first of these equations, an \verb+\arrlabel+ command
-  with the label \texttt{Demo2} is included.
-  Now, we will make another \texttt{eqnarray}-like
-  structure, again in the \texttt{ddeqar} environment:
-  \begin{ddeqar}
-    \sin 2\alpha & =
-      & 2 \sin \alpha \cos \alpha \heqno \label{Demo3} \\
-    \cos 2\alpha & =
-      & \cos ^2 \alpha - \sin ^2 \alpha \nydeqno \\
-  \rem{or}
-      & = & 2\cos ^2 \alpha - 1
-  \end{ddeqar}
-  This example shows the use of \verb$\heqno$ in the first
-  equation, which produces an ordinary equation number.
-  The first equation is also labelled, with the label
-  \texttt{Demo3}.  The next equation's number was produced
-  by the command \verb$\nydeqno$.  Also, notice the use of
-  \verb+\rem{or}+, which results in the text ``or'' without
-  changing the alignment.  To illustrate the use of
-  \verb+\arrlabel{Demo2}+ above, we here make a reference to it:
-  \ldots{} in equations \ref{Demo2} \ldots which was
-  created by typing
-  `\verb+\ldots{} in equations \ref{Demo2} \ldots+'.
-
-  To step the equation number counter, we want the
-  following equations typeset in ordinary
-  \texttt{eqnarray} environment:
-  \begin{eqnarray}
-    \tan ^2 \alpha & =
-      & \frac{\sin ^2 \alpha}{\cos ^2 \alpha} \label{Demo4} \\
-    \tan \alpha & =
-      & \frac{\sin \alpha}{\cos \alpha}
-  \end{eqnarray}
-  The upper equation was given the label \texttt{Demo4}.
-
-  Now one of the ``recycling'' commands is to be
-  demonstrated.  First of all, let's make an ordinary
-  reference to equation~\ref{Demo3}, and then ``recycle'' it:
-  $$ \sin 2\alpha = 2 \sin \alpha \cos \alpha \reqno{Demo3} $$
-  This was obtained with \verb#$$ ... $$# with the command
-  \verb#\reqno{Demo3}# at the end.  Also partially
-  numbered equations can be recycled with the
-  \verb#\reqno{FOO}# command, as with
-  equation~\ref{Demo1}:
-  $$ \sin ( \alpha - \beta ) = \sin \alpha \cos \beta -
-    \sin \beta \cos \alpha \reqno{Demo1} $$
-  (However, the use of \verb#\rndeqno{FOO}# and
-  \verb#\rdeqno{FOO}# will produce strange results with
-  two (different) partial equation numbers if \texttt{FOO}
-  refers to a partially numbered equation.)
-
-  The next equation was written with \verb#$$ ... $$# and
-  a \verb#\deleqno# command at the end:
-  $$ \tan 2\alpha = \frac{2\tan \alpha}{1 - \tan ^2 \alpha} \deleqno $$
-  Notice how the main equation number counter is still the
-  same, despite that we now are outside of the
-  \texttt{ddeqar} environment. Also, notice how the use of
-  \verb#\reqno# above did not affect the equation number
-  counter. The following equation is also set within
-  \verb#$$ ... $$#, but it uses the command
-  \verb#\nydeleqno# to produce an equation number with a
-  new main number:
-  $$ \sin ^2 \alpha = 1 - \cos ^2 \alpha \nydeleqno $$
-
-  Now we will elaborate a little on \verb#\rndeqno{FOO}#
-  and \verb#\rdeqno{FOO}#. Let us use
-  equation~\ref{Demo4}, and see what happens if we use the
-  \verb#\rndeqno{FOO}# command:
-  $$ \tan ^2 \alpha = \frac{\sin ^2 \alpha}
-    {\cos ^2 \alpha} \rndeqno{Demo4} $$
-  which we rewrite:
-  $$ \tan ^2 \alpha = \frac{\sin ^2 \alpha}
-    {1 - \sin ^2 \alpha} \rdeqno{Demo4}  \label{Demo5} $$
-  with \verb#\rdeqno{Demo4}# at the end.  This is great
-  fun, so why not one more:
-  \begin{deqrarr}
-  \tan ^2 \alpha = \frac{1 - \cos ^2 \alpha}
-    {\cos ^2 \alpha} \ddeqreqno[-\jotbaseline]{Demo4}
-  \nonumber
-  \end{deqrarr}
-  Also, the middle form of equation~\ref{Demo4} got a
-  label, \texttt{Demo5}.  In the last example, the construct\\
-  \verb+  \ddeqreqno[-\jotbaseline]{Demo4}   \nonumber+\\ in a
-  \texttt{deqrarr} environment is used, to obtain
-  \texttt{fleqn} compatibility.
-
-  There is still one equation to write.  This time we
-  again use the \texttt{deqarr} environment:
-  \begin{deqarr}
-  \cot \alpha & = & \frac{\cos \alpha}{\sin \alpha} \\
-  \where
-    & = & \frac{1}{\tan \alpha}
-  \end{deqarr}
-  This example also shows the use of the \verb+\where+
-  command, which is a special case of the \verb+\rem+ command.
-  Now, the interesting thing of referring to the recycled
-  equations is ahead. If one writes \verb#\ref{Demo5}#,
-  this is what \LaTeX\ will return:~\ref{Demo5}.  That is
-  not too instructive, since the partial equation numbers
-  are quite common in this document.  To make the complete
-  reference, use \verb#\ref{Demo4}\ref{Demo5}#.  The
-  reference~\ref{Demo4}\ref{Demo5} is much more
-  comprehensible, right? (If you get bad line-breaks at
-  such references, put them in an \verb#\mbox{...}#.)
-
-  Now we will show the use of the commands to recycle equation
-  numbers in \verb+eqnarray+-like structures.  These commands
-  are \verb+\eqreqno{FOO}+, \verb+\deqreqno{FOO}+, and
-  \verb+\ddeqreqno{FOO}+.  We start by repeating equation
-  \ref{Demo1} in an \verb+deqrarr+ environment:
-  \begin{deqrarr}
-    \sin ( \alpha - \beta ) & =
-      & \sin \alpha \cos \beta - \sin \beta \cos \alpha
-      \eqreqno{Demo1}
-    \sin 2\alpha & = & 2 \sin\alpha \cos\alpha
-  \end{deqrarr}
-  The second equation here shows how the alignment of the
-  equations is preserved.  Next, we can use the equation
-  \ref{Demo3} for some variations:
-  \begin{deqrarr}
-    \sin 2\alpha & = & 2 \sin\alpha \cos\alpha
-      \deqreqno{Demo3}
-    \sin 4\alpha & = & 2 \sin 2\alpha \cos 2\alpha \\
-      & = & 2\left( 2\sin\alpha \cos\alpha
-        \left( \cos^2 \alpha - \sin^2 \alpha\right)\right)
-        \ddeqreqno{Demo3}
-      & = & 4\left(\sin\alpha \cos\alpha
-        \left( \cos^2 \alpha - \sin^2 \alpha\right)\right)
-        \ddeqreqno[-\jotbaseline]{Demo3}
-  \end{deqrarr}
-  The features used here are \verb+\deqreqno{Demo3}+
-  on the first line, \verb+\ddeqreqno{Demo3}+ on the
-  second line, and \verb+\deqreqno[-\jotbaseline]{Demo3}+
-  on the third.  Note how the inclusion of
-  \verb+[-\jotbaseline]+ on the third line prevents
-  \LaTeX{} from inserting an extra blank line.  The
-  second line ends with `\verb+\\+', and has thus no
-  equation number at all.
-
-  The last part shows how you may use \verb+\eqreqno+ and its
-  relatives in \verb+deqarr+ environment:
-  \begin{deqarr}
-    \sin\alpha & = & \sin\alpha \cos 0 + \sin 0 \cos\alpha \\
-    \sin 2\alpha & = & 2 \sin\alpha \cos\alpha \eqreqno{Demo3}
-    \sin 3\alpha & = & \sin 2\alpha \cos\alpha +
-      \sin\alpha \cos 2\alpha \\
-    \sin 4\alpha & = & 2 \sin 2\alpha \cos 2\alpha \\
-    \sin 5\alpha & = & \sin 3\alpha \cos 2\alpha +
-      \sin 2\alpha \cos 3\alpha \ddeqreqno{Demo3}
-    \sin 6\alpha & = & 2 \sin 3\alpha \cos 3\alpha
-  \end{deqarr}
-  The interesting part here is an `\verb+\eqreqno{Demo3}+' at
-  the end of the second line and a `\verb+\ddeqreqno{Demo3}+' at
-  the end of the fifth line.  Notice how the partial
-  equation number counter in unaffected by the enetering of
-  the \verb+deqarr+ environment.
-
-  Finally, the $\mathcal{END}$!  If you want your
-  equation numbers left-aligned, just specify the \texttt{leqno}
-  option for the \texttt{documentclass} you are using.  It
-  should work!  If you have any suggestions, corrections
-  or contributions, please contact me. Enjoy \LaTeX !
-
-  {\itshape mats d.}
-\end{document}
-\endinput
-%%
-%% End of file `delex.tex'.
diff --git a/Master/texmf-dist/source/latex/deleq/00readme.dlq b/Master/texmf-dist/source/latex/deleq/00readme.dlq
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-
-
-This is the file `00readme.dlq', which accompanies the `deleq'
-package distribution.  The package defines environments and commands 
-to enable partial equation numbers (3a, 3b, ...) and repeated use of 
-equation numbers.  To use the package, run LaTeX on 
-`deleq.ins', this produces the files `deleq.sty', which contains 
-the macro definitions, and the file `delex.tex', which is an example 
-of the use of the package.  To obtain the userguide and documentation, 
-run LaTeX on `deleq.dtx'.  To obtain the example, run LaTeX on `delex.tex'.
-
-The 'deleq' package consists of two files:
-    deleq.ins   -  the installation driver
-    deleq.dtx   -  the macro code, instructions on how to use 
-                   the package, and an example in `docstrip'-able format.
-Anyone is free to re-distribute these files provided the restrictions
-mentioned in 'deleq.ins' are obeyed.  These are mainly that the 
-two files always must be distributed together and that noone is 
-allowed to distribute the files for profit.  
-
-Inquiries can be sent to:  <matsd@homenet.se>.
-
-
-
-
-____________________________________________________________________
-Copyright (c) 1994-97 by Mats Dahlgren.
-
-
diff --git a/Master/texmf-dist/source/latex/deleq/deleq.dtx b/Master/texmf-dist/source/latex/deleq/deleq.dtx
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-%  
-%  \iffalse 
-% 
-%    The first part is a comment to the reader(s) of `deleq.dtx'.
-%
-%  deleq.dtx    Version 4.41, July 7, 1997
-%  (c) 1994-97 by Mats Dahlgren  (matsd@homenet.se) 
-%
-%  Please see the information in file `deleq.ins' on how you 
-%  may use and (re-)distribute this file.  Run LaTeX on the file 
-%  `deleq.ins' to get a .sty-file, instructions, and an example.
-%
-%  This file may NOT be distributed if not accompanied by 'deleq.ins'.
-%
-%<*driver>
-\documentclass[a4paper]{ltxdoc}
-\textwidth=150mm
-\textheight=210mm
-\topmargin=0mm
-\oddsidemargin=5mm
-\evensidemargin=5mm
-%\begin{document}
-  \DocInput{deleq.dtx}
-%  \PrintChanges
-\end{document}
-%</driver>
-%  \fi
-%
-%  \CheckSum{645}
-%
-%  \def\filename{deleq.dtx}
-%  \def\fileversion{4.41}
-%  \def\filedate{1997/07/07}\def\docdate{\filedate}
-%  \MakeShortVerb{\|}
-%  \date{\docdate}
-%  \title{\textsf{deleq} -- a \LaTeX{} Macro for Partial
-%    Numbering of Equations\thanks{This document describes
-%    \textsf{deleq} version \fileversion , last revised \docdate}}
-%  \author{Mats Dahlgren\\ (\texttt{matsd@homenet.se})}
-%  \begin{document}
-%  \maketitle
-%  \begin{abstract}
-%  To enable a more flexible equation numbering, especially 
-%  ``partial'' equation numbers (`3a', `3b' \textit{etc.}), 
-%  the \textsf{deleq} package has been developed.  It can produce
-%  partial equation numbers intermixed with ordinary
-%  equation numbers also in an |eqnarray|-like environment,
-%  the intermixing can occur within one environment. 
-%  References to a partially numbered equation can be both the
-%  complete equation number (`3b') or only the main equation
-%  number (`3'). 
-%  Furthermore, equation numbers can be recycled without
-%  disturbing the ordinary equation numbers.  The
-%  package also provides commands for putting commentatory
-%  text in an |eqnarray| environment. 
-%  Both standard \LaTeX{} class options
-%  |leqno| and |fleqn|\footnote{Not all commands of
-%  \textsf{deleq} work with the \texttt{fleqn} option.}
-%  work with \textsf{deleq}.\\
-%  \small This file and the package:\
-%  Copyright \copyright\ 1994-1997 by Mats Dahlgren. 
-%  All rights reserved.
-%  \end{abstract}
-%  
-%  \section{Introduction}
-%  \textsf{deleq} is a \LaTeX{} package which makes partial
-%  numbering of equations possible.  It is meant to be used
-%  when numbering such as 3a, 3b, \textit{etc.} is desired.
-%  The default is to give an equation number like `3a'
-%  without period and with the `a' typeset in roman font. 
-%  It can be used in |article| as well as |book| and
-%  |report| document classes.  The examples given below are
-%  valid for the |article| class.  \textsf{deleq} is fully
-%  compatible with the |leqno| documentclass option and 
-%  almost fully with the |fleqn| class option.
-%  Equations can be numbered either 3, 3a, 3b, $\ldots$, or
-%  2, 3a, 3b, $\ldots$. Also, equation numbers within
-%  |eqnarray|-like environments can be numbered 3, 3a, 3b,
-%  $\ldots$ or starting at 3a, which can follow both after
-%  equation 2b or 3.  An |eqnarray|-like environment can have 
-%  its first equation numbered 3b if the nearest previous
-%  equation is 3a.  Within one |eqnarray|-like  environment, 
-%  equations can be numbered 3a, 3b, 4, 4a, 4b, 5a, 5b,
-%  \textit{etc.}, and also not numbered lines are possible
-%  (`|\nonumber|' works with some limitations). 
-%  Furthermore, equation numbers can
-%  be ``recycled''.  If equation 3 is repeated after
-%  equation 8, it can still have the numbering set to 3,
-%  and be followed by (a new) equation 9.  ``Recycled''
-%  equation numbers can receive partial numbers (3a, 3b,
-%  $\ldots$); partially numbered equations can also be
-%  ``recycled'' (but at this stage, the latter can not
-%  receive new partial numbers neatly, it will come out
-%  like `3ba' if eqution 3b is the ``recycled'' equation). 
-%  Two commands are supplied which enable the user to write
-%  commentary texts in |eqnarray|-like environments without
-%  interfering with the alignment. 
-%  
-%  \subsection{History}
-%  |deleq.sty| was originally written for \LaTeX{} 2.09,
-%  and contained several commands which became obsolete
-%  with the introduction of \LaTeXe.  These commands have
-%  been removed.  The first release for \LaTeXe{} was v.4.0,
-%  of Oct.~14, 1994. The December 1994 release
-%  (v.4.1, Dec.~27, 1994) was the first which was compatible with the
-%  |docstrip| utility of Johannes Braams, Denys Duchier and
-%  Frank Mittelbach.  In release v.4.2 new
-%  abilities to reference entire |deqarr| and |ddeqar|
-%  environments and enhanced abilities for recycled
-%  equation numbers were introduced. 
-%  Also in \textsf{deleq} v.4.2 this
-%  documentation was revised and some internal commands
-%  compacted. 
-%  A previous release, v.4.3, was made nessecary
-%  because the changed handeling of arguments in connection
-%  with the options in \LaTeXe{} of 1995/06/01.
-%  In release v.4.4, compatibility with the \LaTeX{} 
-%  class option |fleqn| was
-%  introduced.\footnote{\texttt{fleqn} incompatibility was
-%  pointed out by Peter Kruijt (\texttt{peterk@wfw.wtb.tue.nl})} 
-%  In v.4.41 only some changes to the documentation have been introduced. 
-%  
-%  \textsf{deleq} version 4.41 has been tested with \LaTeXe{}
-%  of 1997/06/01 running \TeX{} 3.14159 in MiK\TeX{} 1.07
-%  under Windows~95.  Please send bug reports (see below),
-%  corrections, additions, suggestions, \textit{etc.}\ to
-%  me at \texttt{matsd@homenet.se}. 
-%  Version 3.02 is the last
-%  (non-supported) version for \LaTeX{} 2.09. (Command names
-%  are a mixture of \LaTeX , Swedish and a bit of the
-%  author's fantasy$\ldots$) 
-%  
-%  \subsection{Known Problems}
-%  \begin{itemize}
-%  \item \DescribeMacro{\eqreqno} \DescribeMacro{\deqreqno}
-%    \DescribeMacro{\ddeqreqno} \DescribeEnv{deqarr}
-%    \DescribeEnv{ddeqar} \DescribeMacro{\jotbaseline}
-%    When using |\eqreqno|, |\deqreqno|, and |\ddeqreqno|
-%    on the last line in a |deqarr|, |ddeqar|, |eqnarray|, or
-%    |eqnarray*|, there will be an extra blank line with an
-%    equation number (not in the |*| form) at the end of the
-%    environment.  To avoid this problem, use\\
-%    |  \eqreqno[-\jotbaseline]{FOO} \nonumber|\\
-%    instead of
-%    |\eqreqno{FOO}| (the analogues for |\deqreqno| and
-%    |\ddeqreqno| are obvious). 
-%  \end{itemize}
-%  
-%  \section{Userguide}
-%  \subsection{Requirements}
-%  The file |deleq.sty| must be available in the user's
-%  |TEXINPUTS| directories.
-%  It requires \LaTeXe{} of 1996/12/01 (or newer).
-%  
-%  \subsection{Usage}
-%  The package is included by stating\\
-%  |  \usepackage{deleq}| \\
-%  In the document preamble.
-%  The documentclass option |leqno| is fully supported,
-%  and the option |fleqn| is recognized by the environments 
-%  defined in \textsf{deleq}.
-%  Other class or package options do not have any effect on
-%  \textsf{deleq}.
-%  
-%  \subsection{Environments}
-%  The package defines the following five environments:
-%  \begin{description}
-%  \item{\texttt{deqn}} \DescribeEnv{deqn}
-%    is an equation environment for automatic
-%    numbering of the  first equation of type `3a';
-%  \item{\texttt{ddeqn}} \DescribeEnv{ddeqn}
-%    is an equation used for automatic numbering
-%    of the equations following the one in |deqn|, see also details
-%    below;
-%  \item{\texttt{deqarr}} \DescribeEnv{deqarr}
-%    is an environment for automatic partial equation
-%    numbering in |eqnarray|-like environment with
-%    |deqn| functionality for the first equation;
-%  \item{\texttt{ddeqar}} \DescribeEnv{ddeqar}
-%    similar to |deqarr| environment, but
-%    with |ddeqn| behaviour for the first equation, see details below;
-%  \item{\texttt{deqrarr}} \DescribeEnv{deqrarr}
-%    this is an `|eqnarray|'-like  environment
-%    specially designed for recycled equation  numbers.
-%  \end{description}
-%  
-%  \subsection{Commands}
-%  The package defines the following fourteen user commands:\\
-%  \hspace*{5mm}|\nydeqno|\\
-%  \hspace*{5mm}|\heqno|\\
-%  \hspace*{5mm}|\reqno{FOO}|\\
-%  \hspace*{5mm}|\rndeqno{FOO}|\\
-%  \hspace*{5mm}|\rdeqno{FOO}|\\
-%  \hspace*{5mm}|\eqreqno[|\textit{len}|]{FOO}|\\
-%  \hspace*{5mm}|\deqreqno[|\textit{len}|]{FOO}|\\
-%  \hspace*{5mm}|\ddeqreqno[|\textit{len}|]{FOO}|\\
-%  \hspace*{5mm}|\arrlabel{FOO}|\\
-%  \hspace*{5mm}|\where|\\
-%  \hspace*{5mm}|\rem{|\textit{text}|}|\\
-%  \hspace*{5mm}|\nydeleqno|\\
-%  \hspace*{5mm}|\deleqno|\\
-%  \hspace*{5mm}|\jotbaseline|\\
-%  
-%  \subsection{Notice}
-%  \begin{enumerate}
-%  \item
-%  \DescribeMacro{\nydeqno} \DescribeMacro{\heqno}
-%  \DescribeMacro{\arrlabel} \DescribeEnv{deqarr}
-%  \DescribeEnv{ddeqarr}
-%    The use of |\arrlabel| may give unexpected results if
-%    any of the commands |\nydeqno| or |\heqno| is used in the
-%    same |deqarr| or |ddeqar| environment.
-%  \item If you use |\nydeqno|,
-%    |\heqno|, |\reqno|, |\rndeqno|, |\rdeqno|,
-%    |\deqreqno|, |\ddeqreqno|, |\nydeleqno|, or |\deleqno| in
-%    combination with |\label{FOO}|, |\label{FOO}| should
-%    appear after the \textsf{deleq}-command;
-%  \item If you change the appearance of equation numbers
-%    (\textit{e.g.}\ use
-%    `[2]' instead of `(2)'),  \textsf{deleq}'s commands may not typeset
-%    equations with partial  numbers like your ordinary
-%    equations.
-%  \item The class option |fleqn| is not recognized by the
-%    commands |\reqno|, |\rndeqno|, |\rdeqno|, |\nydeleqno|, and
-%    |\deleqno|.
-%  \end{enumerate}
-%  
-%  \section{Syntax}
-%  Here follows a more detailed description of the
-%  different environments and commands.
-%  \begin{description}
-%  \item{|\begin{deqn} ... \end{deqn}|}  \DescribeEnv{deqn} \\
-%  Typesets an equation just like
-%  |\begin{equation} ... \end{equation}| does, but gives it
-%  a number such as `3a' instead of `3' (always `a').  It
-%  steps the main equation counter. 
-% 
-%  \item{|\begin{ddeqn} ... \end{ddeqn}|}  \DescribeEnv{ddeqn} \\
-%  Typesets an equation just like
-%  |\begin{equation} ... \end{equation}| does, but gives it
-%  a number such as `3b', `3c', $\ldots$ instead of `3',
-%  `4', $\ldots$ when following after another partially
-%  numbered equation.  When following after an ordinarily
-%  numbered equation (`3') it gives a partial equation
-%  number with the last used ordinary equation number,
-%  \textit{e.g.}\  `3a'.  Can be made to produce the result
-%  of |deqn| environment by the use of |\nydeqno| (see
-%  below).  |ddeqn| does not step the main equation counter.  
-% 
-%  \item{|\begin{deqarr} ... \end{deqarr}|}  \DescribeEnv{deqarr} \\
-%  Typesets an equation array just like
-%  |\begin{eqnarray} ... \end{eqnarray}| does, but gives
-%  the first numbered equation a number like `3a' instead
-%  of `3' (always `a'), and the following `3b', `3c'
-%  \textit{etc.}  It steps the main equation counter.
-%  The |\nonumber| command works just like 
-%  in the |eqnarray| environment on the partial equation
-%  counter.  Thus, if you use |\nonumber| on all lines in an
-%  |deqarr| environment (or on all lines before or between
-%  |\heqno| or |\nydeleqno|) the equation numbering in your
-%  document will be incorrect.  There is no warning issued by 
-%  \LaTeX{} if this happends.  If you want blank lines and
-%  then a |\heqno|'ed equation followed by partially numbered
-%  equations, use the |ddeqar| environment instead.  The same
-%  is true for |\nydeqno|'ed equations. 
-% 
-%  \item{|\begin{ddeqar} ... \end{ddeqar}|}  \DescribeEnv{ddeqar} \\
-%  Typesets an equation array just like
-%  |\begin{eqnarray} ... \end{eqnarray}| does, but gives
-%  the equation numbers such as `3a' if following after an
-%  equation numbered `3' (ordinary equation number) and
-%  numbers such as `3c' if following after a partially
-%  numbered equation `3b'. Can be made to produce the
-%  result of |deqarr| environment by the use of |\nydeqno|.
-%  |ddeqar| does not step the main equation counter. 
-%  The |\nonumber| command works like in the
-%  |deqarr| environment.
-% 
-%  \item{|\begin{deqrarr} ... \end{deqrarr}|}  \DescribeEnv{deqrarr} \\
-%  This environment is meant to host recycled equations and has
-%  |eqnarray| structure.  By default, it issues no equation
-%  number at all on a line which ends with |\\|.  The use of
-%  |\label{FOO}| within |deqrarr| returns the present partial
-%  equation number of recycled equations (just like with
-%  |\rndeqno| and |\rdeqno|).  Note that neither |\heqno|
-%  nor |\nydeleqno| gives any equation numbers at all in the
-%  |deqrarr| environment. 
-% 
-%  \item{|\nydeqno|}  \DescribeMacro{\nydeqno} \\
-%  Used within |deqarr| and |ddeqar| environments to
-%  step the main equation number by one and reset the
-%  partial equation number to `a'; thus, |\nydeqno| gives
-%  equation number `4a' when following after equation `3c'.
-% 
-%  \item{|\heqno|}  \DescribeMacro{\heqno} \\ 
-%  Used within |deqarr| and |ddeqar|
-%  environments to step the main equation number by one and 
-%  to produce an ordinary equation number; thus, gives
-%  equation number `4' when following equation `3c'.
-%  Equations following the |\heqno|-ed will be partially 
-%  numbered with the |\heqno|-ed equation's number as the
-%  main number, \textit{e.g.}\  `4a' (unless it has a |\nydeqno|
-%  command, which in this case would produce the equation
-%  number `5a').
-% 
-%  \item{|\reqno{FOO}|}  \DescribeMacro{\reqno} \\
-%  Is used when repeating an equation with its original
-%  number, ``recycling'' the eqaution number.
-%  |\reqno| takes the argument |FOO|, which has to be defined
-%  by a |\label{FOO}| in the original equation.  It can
-%  only be used within |$$ ... $$|.  It does not affect the
-%  equation number counter, nor the ordinary partial equation number
-%  counter.  However, it resets the partial equation number
-%  counter for the |\rndeqno|, |\rdeqno|, |\deqreqno|, and 
-%  |\ddeqreqno| commands.  If used with a |\label{FOOO}|
-%  command, the |.aux|-file will only contain the page number
-%  of label |FOOO|.  This command is not compatible with the
-%  class option |fleqn|.  Instead of |$$ ... \reqno{FOO} $$|,
-%  use a one-line |deqrarr| environment with the commands
-%  |\eqreqno[-\jotbaseline]{FOO} \nonumber| at the end.
-% 
-%  \item{|\rndeqno{FOO}|}  \DescribeMacro{\rndeqno} \\
-%  Adds a partial equation number to an old equation number,
-%  specified by the |FOO| label.  If |FOO| refers to equation 
-%  `4', |\rdeqno{FOO}| will result in equation number `4a'
-%  (always `a').  It can only be used within
-%  |$$ ... $$|.  It does not affect the equation number counter,
-%  nor the ordinary partial equation number counter.  However, it
-%  resets the partial equation number counter for the
-%  |\rndeqno|, |\rdeqno|, |\deqreqno|, and |\ddeqreqno| commands.
-%  The argument of |\rndeqno| follows the same rules as that of
-%  |\reqno|.  When used with the |\label{FOOO}| command, a
-%  reference to |FOOO| will only return the partial equation
-%  number (and the page number).  To make a complete reference
-%  to an equation which has a |\rndeqno| command, say
-%  |\ref{FOO}\ref{FOOO}|. This command is not compatible with the
-%  class option |fleqn|.  Instead of |$$ ... \rndeqno{FOO} $$|,
-%  use a one-line |deqrarr| environment with the commands
-%  |\deqreqno[-\jotbaseline]{FOO} \nonumber| at the end.
-% 
-%  \item{|\rdeqno{FOO}|}  \DescribeMacro{\rdeqno} \\
-%  Same as |\rndeqno{FOO}| but without resetting any
-%  equation number counter and giving consecutive partial
-%  equation numbers (`4b', `4c', \textit{etc.}).
-%  \textbf{Note: } There is nothing preventing the
-%  repeated use of |\rndeqno{FOO}| and |\rdeqno{FOO}| for
-%  the same label |FOO|.  This will result in numbering such
-%  as `3a' (if |FOO| refers to equation `3') occuring several
-%  times.  This command is not compatible with the
-%  class option |fleqn|.  Instead of |$$ ... \rdeqno{FOO} $$|, 
-%  use a one-line |deqrarr| environment with the commands
-%  |\ddeqreqno[-\jotbaseline]{FOO} \nonumber| at the end.
-% 
-%  \item{|\eqreqno[|\textit{len}|]{FOO}|} 
-%  \DescribeMacro{\eqreqno} \\
-%  This command is the array-like version of |\reqno{FOO}| and
-%  is used in much the same way.  The optional argument \textit{len}
-%  is a length which is added between consecutive rows in the array-like
-%  structure.  When using |\eqreqno| no `|\\|' should be issued
-%  at the end of the line, it is embedded in the command.  This
-%  is giving a strange appearance if |\eqreqno| is used on the
-%  last line of the array-like sturcture, namely an extra blank
-%  line (with equation number).  To avoid this problem, specify
-%  a negative length for \textit{len}, preferably `|-\jotbaseline|'
-%  (se below), and issue a `|\nonumber|' afterwards. 
-% 
-%  \item{|\deqreqno[|\textit{len}|]{FOO}|}
-%  \DescribeMacro{\deqreqno} \\
-%  This is the `|\rndeqno|' version of `|\eqreqno|' and is used
-%  as the former with the latter's abilities at the end of a
-%  line. 
-% 
-%  \item{|\ddeqreqno[|\textit{len}|]{FOO}|}
-%  \DescribeMacro{\ddeqreqno} \\
-%  This is the `|\rdeqno|' version of `|\eqreqno|' and is used
-%  as the former with the latter's abilities at the end of a
-%  line. 
-% 
-%  \item{|\arrlabel{FOO}|}  \DescribeMacro{\arrlabel} \\
-%  This command is a version of \LaTeX 's ordinary
-%  |\label{FOO}| command meant to be used in |deqarr| and
-%  |ddeqar| environments.  In these environments, a
-%  |\label{FOO}| command gives a reference to the specific
-%  equation, \textit{e.g.}\ 3b, whereas |\arrlabel{FOO}| in the
-%  same position gives a reference containing only the main
-%  equation number, 3 in this example.  For restrictions, see
-%  the section ``Notice'' above.  The four commands |\eqreqno|,
-%  |\deqreqno|, |\ddeqreqno|, and |\arrlabel| were created after
-%  inspiration from Larry Jones (\texttt{schnuff@mit.edu}). 
-% 
-%  \item{|\where|}  \DescribeMacro{\where} \\
-%  The command |\where| typsets the text ``where'' (in
-%  the default LR-font) flush left on a seperate row in
-%  |eqnarray|, |deqarr|, |ddeqar|, and  |deqrarr| environments,
-%  and preserves the environment's alignment for rows to come.
-% 
-%  \item{|\rem{|\textit{text}|}|}  \DescribeMacro{\rem{text}} \\
-%  The command |\rem{|\textit{text}|}| typsets the text
-%  ``\textit{text}'' (in the default LR-font) flush left on
-%  a seperate row in |eqnarray|, |deqarr|, |ddeqar|, and |deqrarr|
-%  environments, and preserves the environment's alignment
-%  for rows to come.  |\where| is equivalent to
-%  |\rem{where}|.
-% 
-%  \item{|\nydeleqno|}  \DescribeMacro{\nydeleqno} \\
-%  Gives a new partial equation number when used within |$$ ... $$|.
-%  Thus, writing |$$ ...| |\nydeleqno $$| is equivalent to
-%  writing |\begin{deqn} ... \end{deqn}|. 
-%  This command is not compatible with the
-%  class option |fleqn|, use |\begin{deqn} ... \end{deqn}|
-%  instead. 
-% 
-%  \item{|\deleqno|}  \DescribeMacro{\deleqno} \\
-%  Gives a partial equation number when used within |$$ ... $$|.
-%  Thus, writing |$$ ...| |\deleqno| |$$| is equivalent to
-%  writing |\begin{ddeqn} ... \end{ddeqn}|.
-%  This command is not compatible with the
-%  class option |fleqn|, use |\begin{ddeqn} ... \end{ddeqn}|
-%  instead. 
-% 
-%  \item{|\jotbaseline|} \DescribeMacro{\jotbaseline} \\
-%  This is a rubber length which is set to be the sum of
-%  |\baselinsekip| and |\jot| each time a |deqarr|, |ddeqar|,
-%  or a |deqrarr| environment is enterd.  It is meant to be
-%  used with the |\eqreqno| command and its relatives to
-%  eliminate the problems when these commands are used on the
-%  last line of the environment.  (The length |\baselineskip| +
-%  |\jot| is the length \LaTeX{} skips between two
-%  empty lines in an `|eqnarray|' environment and its
-%  derivates defined in \textsf{deleq}.) 
-% 
-%  \end{description}
-%  
-%  \section{Example}
-%  After running \LaTeX{} on |deleq.ins|, there is an
-%  example avaliable in the file |delex.tex|,
-%  which makes use of all the environments and commands
-%  defined in the \textsf{deleq} package.  Typset it and see with
-%  your own eyes what the results are!
-% 
-% 
-%  \section{Sending a Bug Report}
-%  \textsf{deleq} is most likely to contain bugs.
-%  Reports of bugs in the package are most welcome.  
-%  Before filing a bug report,
-%  please take the following actions:
-%  \begin{enumerate}
-%  \item Ensure your problem is not due to your inputfile;
-%  \item Ensure your problem is not due to 
-%     your own package(s) or class(es);
-%  \item Ensure your problem is not covered in the section
-%     ''Known Problems'' above;
-%  \item  Try to locate the problem by writing a minimal
-%     \LaTeX{} input file which reproduces the problem. 
-%     Include the command\\
-%     |  \setcounter{errorcontextlines}{999}|\\
-%     in your input;
-%  \item Run your file through \LaTeX{};
-%  \item Send a description of your problem, the input file
-%     and the log file via e-mail to:\\
-%     |  matsd@homenet.se|
-%  \end{enumerate}
-%  {\itshape Enjoy your \LaTeX!\raisebox{-\baselineskip}{mats d.}}
-%  \StopEventually{\par\vfill\hfill{\scriptsize Copyright
-%    \copyright{} 1994-97 by Mats Dahlgren.}}
-%  \newpage
-% 
-%  \section{The Code}
-%  For the interested reader(s), here is a short description
-%  of the code. \par
-% \iffalse
-%<*paketkod>
-% Part 1: Identification etc.
-% \fi
-%  First, the package is to identify itself.
-%    \begin{macrocode}
-\NeedsTeXFormat{LaTeX2e}[1996/12/01]
-\ProvidesPackage{deleq}[1997/07/07 v.4.41 Partial equation numbering]
-\def\deleqver{\textsf{deleq} version 4.41 (July~7, 1997)}
-%    \end{macrocode}
-% \iffalse
-% Part 2: Counters and internal commands, etc.
-% \fi
-%  \par  Then, we need to define the counters used for the partial
-%  part of the equation number.  The counter |Deleq| is used for
-%  ``recycled'' equation numbers, hence no dependence on any other
-%  counter. 
-%    \begin{macrocode}
-\newcounter{deleq}[equation]
-\newcounter{Deleq}
-\newlength{\jotbaseline}
-\renewcommand{\thedeleq}{\ensuremath{\theequation\mathrm{\alph{deleq}}}}
-\renewcommand{\theDeleq}{\ensuremath{\mathrm{\alph{Deleq}}}}
-\def\@deleqnnum{(\thedeleq)}
-\def\@deleqrnum#1{(\ref{#1}\theDeleq)}
-\def\@eqrnum#1{(\ref{#1})}
-%    \end{macrocode}
-%  The parts making up the |\\| command in the multiline environments
-%  are similar to those used by the standard environments
-%  (at least how they looked some time ago):
-%    \begin{macrocode}
-\def\@deqncr{{\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@ydeqncr}{\global\@eqpen\interdisplaylinepenalty \@ydeqncr}}
-\def\@ydeqncr{\@ifnextchar [{\@xdeqncr}{\@xdeqncr[\z@]}}
-\def\@xdeqncr[#1]{\ifnum0=`{\fi}\@@deqncr
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@deqncr{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \if@eqnsw\@deleqnnum\stepcounter{deleq}\fi
-     \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\newcommand{\@xeqrcr}[2]{\ifnum0=`{\fi}\@@eqrcr{#2}
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@eqrcr#1{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \if@eqnsw\@eqrnum{#1}\fi
-     \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\newcommand{\@xdeqrcr}[2]{\ifnum0=`{\fi}\@@deqrcr{#2}
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@deqrcr#1{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \if@eqnsw\@deleqrnum{#1}\fi
-     \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\def\@deqrarcr{{\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@ydeqrarcr}{\global\@eqpen\interdisplaylinepenalty \@ydeqrarcr}}
-\def\@ydeqrarcr{\@ifnextchar [{\@xdeqrarcr}{\@xdeqrarcr[\z@]}}
-\def\@xdeqrarcr[#1]{\ifnum0=`{\fi}\@@deqrarcr
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@deqrarcr{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \global\@eqnswtrue\global\@eqcnt\z@\cr}
-%    \end{macrocode}
-% \iffalse
-% Part 3:  Commands:  \nydeleqno, \deleqno, \reqno, \rndeqno, \rdeqno, 
-%                     \eqreqno, \deqreqno, \ddeqreqno, \arrlabel,
-%                     \nydeqno, and \heqno
-% \fi
-%  \par Here the definitions of the user commands are.
-%    \begin{macrocode}
-\newcommand{\nydeleqno}{\stepcounter{equation}\stepcounter{deleq}
-  \let\@currentlabel\thedeleq \eqno (\thedeleq)}
-\newcommand{\deleqno}{\refstepcounter{deleq} \let\@currentlabel\thedeleq
-  \eqno (\thedeleq)}
-\newcommand{\reqno}[1]{\setcounter{Deleq}{-1}\refstepcounter{Deleq}
-   \eqno (\ref{#1})}
-\newcommand{\rdeqno}[1]{\refstepcounter{Deleq}
-   \eqno (\ref{#1}\theDeleq)}
-\newcommand{\rndeqno}[1]{\setcounter{Deleq}{0}\refstepcounter{Deleq}
-   \eqno (\ref{#1}\theDeleq)}
-\newcommand{\eqreqno}[2][0pt]{{\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@xeqrcr{#1}{#2}}{\global\@eqpen\interdisplaylinepenalty
-    \@xeqrcr{#1}{#2}}}
-\newcommand{\deqreqno}[2][0pt]{\setcounter{Deleq}{0}\refstepcounter{Deleq}
-    {\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@xdeqrcr{#1}{#2}}{\global\@eqpen\interdisplaylinepenalty
-    \@xdeqrcr{#1}{#2}}}
-\newcommand{\ddeqreqno}[2][0pt]{\refstepcounter{Deleq}
-    {\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@xdeqrcr{#1}{#2}}{\global\@eqpen\interdisplaylinepenalty
-    \@xdeqrcr{#1}{#2}}}
-\newcommand{\arrlabel}[1]{\let\@currentlabel\theequation \label{#1}}
-\newcommand{\nydeqno}{\stepcounter{equation}\stepcounter{deleq}}
-\newcommand{\heqno}{\stepcounter{equation}}
-\def\where{\let\@tempa\relax \def\@tempa{& & &}
-     \@tempa {\hbox to .01\p@{}\rlap{\hskip -\displaywidth where}}\cr}
-\def\rem#1{\let\@tempa\relax \def\@tempa{& & &}
-     \@tempa {\hbox to .01\p@{}\rlap{\hskip -\displaywidth #1}}\cr}
-%    \end{macrocode}
-% \iffalse
-% Part 4:  Environments: 'deqarr', 'ddeqar', 'deqn', 'ddeqn', and 'deqrarr' 
-% \fi
-%  \par The five environments are slight modifications of the
-%  corresponding \LaTeX{} standard environments.  The main difference
-%  lies in which counter(s) is stepped and which internals are used to
-%  finish off the lines.  Three of them have large parts in
-%  common, parts which are put in one macro `|\@dlqnv|':
-%    \begin{macrocode}
-\def\@dlqnv{\setlength{\jotbaseline}{\baselineskip}%
-  \addtolength{\jotbaseline}{\jot}  \global\@eqnswtrue\m@th
-  \global\@eqcnt\z@\tabskip\@centering
-  $$\halign to\displaywidth\bgroup\@eqnsel\hskip\@centering
-  $\displaystyle\tabskip\z@{##}$&\global\@eqcnt\@ne
-  \hskip 2\arraycolsep \hfil${##}$\hfil
-  &\global\@eqcnt\tw@ \hskip 2\arraycolsep $\displaystyle\tabskip\z@{##}$\hfil
-   \tabskip\@centering&\llap{##}\tabskip\z@\cr}
-\newenvironment{deqarr}{\stepcounter{equation}\stepcounter{deleq}
-  \let\@currentlabel\thedeleq  \let\\\@deqncr  \@dlqnv}
-{\@@deqncr\egroup
-      \global\advance\c@deleq\m@ne$$\global\@ignoretrue}
-\newenvironment{ddeqar}{\stepcounter{deleq}
-  \let\@currentlabel\thedeleq  \let\\\@deqncr  \@dlqnv}
-{\enddeqarr}
-\newenvironment{deqn}{$$\refstepcounter{equation}\stepcounter{deleq}
-   \let\@currentlabel\thedeleq}
-  {\eqno \hbox{\@deleqnnum} $$\global\@ignoretrue}
-\newenvironment{ddeqn}{$$\refstepcounter{deleq} \let\@currentlabel\thedeleq}
-  {\enddeqn}
-\newenvironment{deqrarr}{\let\@currentlabel\theDeleq
-  \let\\\@deqrarcr   \@dlqnv}
-{\@deqrarcr   \egroup  $$\global\@ignoretrue}
-%    \end{macrocode}
-% \iffalse
-% Part 5:  'leqno' compatibility
-% \fi
-%  \par If the user wants the equation numbers to the left, we have to
-%  modify some of the commands and internals defined above.  This is
-%  done in a |\DeclareOption|-call, but first we set a
-%  switch to test for the |leqno| option.  Initially, it is set
-%  to |F| and then changed to |T| if the |leqno| option is in effect.
-%    \begin{macrocode}
-\newif\ifl@qn \l@qnfalse
-\DeclareOption{leqno}{%
-\global\l@qntrue%
-\renewcommand{\@deleqnnum}{\hbox to .01\p@{}\rlap{\reset@font\rmfamily
-  \hskip -\displaywidth(\thedeleq)}}
-\renewcommand{\nydeleqno}{\stepcounter{equation}\stepcounter{deleq}
-  \let\@currentlabel\thedeleq \leqno (\thedeleq)}
-\renewcommand{\deleqno}{\refstepcounter{deleq} \let\@currentlabel\thedeleq
-  \leqno (\thedeleq)}
-\renewcommand{\reqno}[1]{\setcounter{Deleq}{-1}\refstepcounter{Deleq}
-   \leqno (\ref{#1})}
-\renewcommand{\rdeqno}[1]{\refstepcounter{Deleq}
-   \leqno (\ref{#1}\theDeleq)}
-\renewcommand{\rndeqno}[1]{\setcounter{Deleq}{0}\refstepcounter{Deleq}
-   \leqno (\ref{#1}\theDeleq)}
-\renewcommand{\@eqrnum}[1]{\hbox to .01\p@{}\rlap{\reset@font\rmfamily
-        \hskip -\displaywidth(\ref{#1})}}
-\renewcommand{\@deleqrnum}[1]{\hbox to .01\p@{}\rlap{\reset@font\rmfamily
-        \hskip -\displaywidth(\ref{#1}\theDeleq)}}
-  }
-%    \end{macrocode}
-% \iffalse
-% Part 6:    `fleqn' compatibility
-% \fi
-%  \par The |fleqn| option is mainly a `\textsf{deleq}-ification' of
-%  the \LaTeXe{} file |fleqn.clo| (1995/06/26 v1.3g).  If both
-%  |leqno| and |fleqn| options are in use, the length
-%  |\mathindent| should be increased to allow space for the
-%  letters of the partial equation numbers.  For the
-%  multiline environments, it is enough to make changes to the
-%  internal |\@dlqnv|.
-%    \begin{macrocode}
-\DeclareOption{fleqn}{%
-\ifl@qn \AtBeginDocument{\addtolength{\mathindent}{1em}} \fi
-\renewenvironment{deqn}%
-  {\@beginparpenalty\predisplaypenalty
-   \@endparpenalty\postdisplaypenalty
-   \refstepcounter{equation}\stepcounter{deleq}
-   \let\@currentlabel\thedeleq%
-   \trivlist \item[]\leavevmode
-     \hb@xt@\linewidth\bgroup $\m@th% $
-     \displaystyle
-     \hskip\mathindent}%
-    {$\hfil % $
-     \displaywidth\linewidth\hbox{\@deleqnnum}%
-     \egroup
-   \endtrivlist}
-\renewenvironment{ddeqn}%
-  {\@beginparpenalty\predisplaypenalty
-   \@endparpenalty\postdisplaypenalty
-   \refstepcounter{deleq}
-   \let\@currentlabel\thedeleq%
-   \trivlist \item[]\leavevmode
-     \hb@xt@\linewidth\bgroup $\m@th% $
-     \displaystyle
-     \hskip\mathindent}%
-    {\enddeqn}
-\renewcommand{\@dlqnv}{%
-  \setlength{\jotbaseline}{\baselineskip}
-  \addtolength{\jotbaseline}{\jot}
-  \global\@eqcnt\z@
-  \tabskip\mathindent
-  \setlength\abovedisplayskip{\topsep}%
-  \ifvmode
-    \addtolength\abovedisplayskip{\partopsep}%
-  \fi
-  \addtolength\abovedisplayskip{\parskip}%
-  \setlength\belowdisplayskip{\abovedisplayskip}%
-  \setlength\belowdisplayshortskip{\abovedisplayskip}%
-  \setlength\abovedisplayshortskip{\abovedisplayskip}%
-  $$\everycr{}\halign to\linewidth% $$
-  \bgroup
-    \hskip\@centering
-    $\displaystyle\tabskip\z@skip{##}$\@eqnsel&%
-    \global\@eqcnt\@ne \hskip \tw@\arraycolsep \hfil${##}$\hfil&%
-    \global\@eqcnt\tw@ \hskip \tw@\arraycolsep
-    $\displaystyle{##}$\hfil \tabskip\@centering&%
-    \global\@eqcnt\thr@@
-    \hb@xt@\z@\bgroup\hss##\egroup\tabskip\z@skip\cr}
-}
-%    \end{macrocode}
-%  If other options were asked for, the package should make
-%  these options `unused'.  Then, last, the option(s)
-%  is (are) processed.
-%    \begin{macrocode}
-\DeclareOption*{\OptionNotUsed}
-\ProcessOptions
-%    \end{macrocode}
-%  That is all.  Happy \TeX-ing!
-% \iffalse
-% END of it all!
-%</paketkod> 
-%<*exempelkod> 
-\documentclass[11pt]{article} %%% add `leqno' if you want left-aligned
-\usepackage{deleq}            %%% equation numbers and `fleqn' to
-\oddsidemargin=0.5cm          %%% flush the equations left.
-\evensidemargin=0.5cm
-\topmargin=-5mm
-\textheight=23.5cm
-\textwidth=15.5cm
-\begin{document}
-  \begin{center}
-  \Large Welcome to the \textsf{deleq} package!
-  \end{center}
- 
-  This is a short document to demonstrate the use of the
-  \textsf{deleq} package and its commands.  It uses \deleqver .
-  \textsf{deleq} was written by Mats Dahlgren
-  (\texttt{matsd@physchem.kth.se}).  Suggestions for
-  improvements and bug reports are most welcome, see the 
-  documentation.  \textsf{deleq} is fully compatible with the
-  \texttt{leqno} option and most of the \texttt{fleqn} option. 
- 
-  We start this demonstration by a simple and well-known
-  equation to get the equation number counter going: 
-  \begin{equation} 
-    \sin^2\alpha + \cos^2\alpha = 1 
-  \end{equation}
-  The first example will be to make use of the
-  \texttt{deqn} environment to get a partially numbered
-  equation:
-  \begin{deqn} 
-    \sin (-\alpha) = - \sin \alpha 
-  \end{deqn}
-  This equation has its cosine companion, here written in
-  the \texttt{ddeqn} environment: 
-  \begin{ddeqn} 
-    \cos (-\alpha) = \cos \alpha 
-  \end{ddeqn}
-  Not so exciting, so far. :--)
- 
-  In the next example we introduce the \texttt{deqarr}
-  environment for writing equations: 
-  \begin{deqarr}
-    \sin ( \alpha + \beta ) & =
-      & \sin \alpha \cos \beta + \sin \beta \cos \alpha \\
-    \sin ( \alpha - \beta ) & = 
-      & \sin \alpha \cos \beta - \sin \beta \cos \alpha
-    \label{Demo1}
-  \end{deqarr}
-  where we also have put in the label \texttt{Demo1} in
-  the second equation. Next, notice how the environment
-  \texttt{ddeqar} uses the same main equation number as
-  the previous equations:
-  \begin{ddeqar}
-    \cos ( \alpha + \beta ) & =
-      & \cos \alpha \cos \beta - \sin \alpha \sin \beta
-      \arrlabel{Demo2} \\
-    \cos ( \alpha - \beta ) & =
-      & \cos \alpha \cos \beta + \sin \alpha \sin \beta
-  \end{ddeqar}
-  In the first of these equations, an \verb+\arrlabel+ command
-  with the label \texttt{Demo2} is included. 
-  Now, we will make another \texttt{eqnarray}-like
-  structure, again in the \texttt{ddeqar} environment:
-  \begin{ddeqar}
-    \sin 2\alpha & =
-      & 2 \sin \alpha \cos \alpha \heqno \label{Demo3} \\
-    \cos 2\alpha & =
-      & \cos ^2 \alpha - \sin ^2 \alpha \nydeqno \\
-  \rem{or}
-      & = & 2\cos ^2 \alpha - 1
-  \end{ddeqar}
-  This example shows the use of \verb$\heqno$ in the first
-  equation, which produces an ordinary equation number.
-  The first equation is also labelled, with the label
-  \texttt{Demo3}.  The next equation's number was produced
-  by the command \verb$\nydeqno$.  Also, notice the use of
-  \verb+\rem{or}+, which results in the text ``or'' without
-  changing the alignment.  To illustrate the use of
-  \verb+\arrlabel{Demo2}+ above, we here make a reference to it:
-  \ldots{} in equations \ref{Demo2} \ldots which was
-  created by typing
-  `\verb+\ldots{} in equations \ref{Demo2} \ldots+'.
- 
-  To step the equation number counter, we want the
-  following equations typeset in ordinary
-  \texttt{eqnarray} environment: 
-  \begin{eqnarray}
-    \tan ^2 \alpha & = 
-      & \frac{\sin ^2 \alpha}{\cos ^2 \alpha} \label{Demo4} \\
-    \tan \alpha & =
-      & \frac{\sin \alpha}{\cos \alpha}
-  \end{eqnarray}
-  The upper equation was given the label \texttt{Demo4}.
- 
-  Now one of the ``recycling'' commands is to be
-  demonstrated.  First of all, let's make an ordinary
-  reference to equation~\ref{Demo3}, and then ``recycle'' it:
-  $$ \sin 2\alpha = 2 \sin \alpha \cos \alpha \reqno{Demo3} $$
-  This was obtained with \verb#$$ ... $$# with the command
-  \verb#\reqno{Demo3}# at the end.  Also partially
-  numbered equations can be recycled with the
-  \verb#\reqno{FOO}# command, as with
-  equation~\ref{Demo1}:
-  $$ \sin ( \alpha - \beta ) = \sin \alpha \cos \beta -
-    \sin \beta \cos \alpha \reqno{Demo1} $$
-  (However, the use of \verb#\rndeqno{FOO}# and
-  \verb#\rdeqno{FOO}# will produce strange results with
-  two (different) partial equation numbers if \texttt{FOO}
-  refers to a partially numbered equation.)
- 
-  The next equation was written with \verb#$$ ... $$# and
-  a \verb#\deleqno# command at the end:
-  $$ \tan 2\alpha = \frac{2\tan \alpha}{1 - \tan ^2 \alpha} \deleqno $$
-  Notice how the main equation number counter is still the
-  same, despite that we now are outside of the
-  \texttt{ddeqar} environment. Also, notice how the use of
-  \verb#\reqno# above did not affect the equation number
-  counter. The following equation is also set within
-  \verb#$$ ... $$#, but it uses the command
-  \verb#\nydeleqno# to produce an equation number with a
-  new main number:
-  $$ \sin ^2 \alpha = 1 - \cos ^2 \alpha \nydeleqno $$
- 
-  Now we will elaborate a little on \verb#\rndeqno{FOO}#
-  and \verb#\rdeqno{FOO}#. Let us use
-  equation~\ref{Demo4}, and see what happens if we use the
-  \verb#\rndeqno{FOO}# command:
-  $$ \tan ^2 \alpha = \frac{\sin ^2 \alpha}
-    {\cos ^2 \alpha} \rndeqno{Demo4} $$
-  which we rewrite:
-  $$ \tan ^2 \alpha = \frac{\sin ^2 \alpha}
-    {1 - \sin ^2 \alpha} \rdeqno{Demo4}  \label{Demo5} $$
-  with \verb#\rdeqno{Demo4}# at the end.  This is great
-  fun, so why not one more: 
-  \begin{deqrarr}
-  \tan ^2 \alpha = \frac{1 - \cos ^2 \alpha}
-    {\cos ^2 \alpha} \ddeqreqno[-\jotbaseline]{Demo4}
-  \nonumber 
-  \end{deqrarr}
-  Also, the middle form of equation~\ref{Demo4} got a
-  label, \texttt{Demo5}.  In the last example, the construct\\
-  \verb+  \ddeqreqno[-\jotbaseline]{Demo4}   \nonumber+\\ in a
-  \texttt{deqrarr} environment is used, to obtain
-  \texttt{fleqn} compatibility.
- 
-  There is still one equation to write.  This time we
-  again use the \texttt{deqarr} environment:
-  \begin{deqarr}
-  \cot \alpha & = & \frac{\cos \alpha}{\sin \alpha} \\
-  \where
-    & = & \frac{1}{\tan \alpha}
-  \end{deqarr}
-  This example also shows the use of the \verb+\where+
-  command, which is a special case of the \verb+\rem+ command.
-  Now, the interesting thing of referring to the recycled
-  equations is ahead. If one writes \verb#\ref{Demo5}#,
-  this is what \LaTeX\ will return:~\ref{Demo5}.  That is
-  not too instructive, since the partial equation numbers
-  are quite common in this document.  To make the complete
-  reference, use \verb#\ref{Demo4}\ref{Demo5}#.  The
-  reference~\ref{Demo4}\ref{Demo5} is much more
-  comprehensible, right? (If you get bad line-breaks at
-  such references, put them in an \verb#\mbox{...}#.)
-
-
-  Now we will show the use of the commands to recycle equation
-  numbers in \verb+eqnarray+-like structures.  These commands
-  are \verb+\eqreqno{FOO}+, \verb+\deqreqno{FOO}+, and
-  \verb+\ddeqreqno{FOO}+.  We start by repeating equation
-  \ref{Demo1} in an \verb+deqrarr+ environment:
-  \begin{deqrarr}
-    \sin ( \alpha - \beta ) & =
-      & \sin \alpha \cos \beta - \sin \beta \cos \alpha
-      \eqreqno{Demo1}
-    \sin 2\alpha & = & 2 \sin\alpha \cos\alpha
-  \end{deqrarr}
-  The second equation here shows how the alignment of the
-  equations is preserved.  Next, we can use the equation
-  \ref{Demo3} for some variations:
-  \begin{deqrarr}
-    \sin 2\alpha & = & 2 \sin\alpha \cos\alpha
-      \deqreqno{Demo3}
-    \sin 4\alpha & = & 2 \sin 2\alpha \cos 2\alpha \\
-      & = & 2\left( 2\sin\alpha \cos\alpha
-        \left( \cos^2 \alpha - \sin^2 \alpha\right)\right)
-        \ddeqreqno{Demo3}
-      & = & 4\left(\sin\alpha \cos\alpha
-        \left( \cos^2 \alpha - \sin^2 \alpha\right)\right)
-        \ddeqreqno[-\jotbaseline]{Demo3}
-  \end{deqrarr}
-  The features used here are \verb+\deqreqno{Demo3}+
-  on the first line, \verb+\ddeqreqno{Demo3}+ on the
-  second line, and \verb+\deqreqno[-\jotbaseline]{Demo3}+
-  on the third.  Note how the inclusion of
-  \verb+[-\jotbaseline]+ on the third line prevents
-  \LaTeX{} from inserting an extra blank line.  The
-  second line ends with `\verb+\\+', and has thus no
-  equation number at all.
- 
-  The last part shows how you may use \verb+\eqreqno+ and its
-  relatives in \verb+deqarr+ environment: 
-  \begin{deqarr}
-    \sin\alpha & = & \sin\alpha \cos 0 + \sin 0 \cos\alpha \\
-    \sin 2\alpha & = & 2 \sin\alpha \cos\alpha \eqreqno{Demo3}
-    \sin 3\alpha & = & \sin 2\alpha \cos\alpha + 
-      \sin\alpha \cos 2\alpha \\
-    \sin 4\alpha & = & 2 \sin 2\alpha \cos 2\alpha \\
-    \sin 5\alpha & = & \sin 3\alpha \cos 2\alpha +
-      \sin 2\alpha \cos 3\alpha \ddeqreqno{Demo3}
-    \sin 6\alpha & = & 2 \sin 3\alpha \cos 3\alpha 
-  \end{deqarr}
-  The interesting part here is an `\verb+\eqreqno{Demo3}+' at
-  the end of the second line and a `\verb+\ddeqreqno{Demo3}+' at
-  the end of the fifth line.  Notice how the partial
-  equation number counter in unaffected by the enetering of
-  the \verb+deqarr+ environment.
-
-
-  Finally, the $\mathcal{END}$!  If you want your
-  equation numbers left-aligned, just specify the \texttt{leqno}
-  option for the \texttt{documentclass} you are using.  It
-  should work!  If you have any suggestions, corrections
-  or contributions, please contact me. Enjoy \LaTeX ! 
- 
-  {\itshape mats d.}
-\end{document}
-%</exempelkod>  
-% \fi
-%
-% \Finale
-%
-\endinput 
diff --git a/Master/texmf-dist/source/latex/deleq/deleq.ins b/Master/texmf-dist/source/latex/deleq/deleq.ins
deleted file mode 100644
index 6c040bbcb36..00000000000
--- a/Master/texmf-dist/source/latex/deleq/deleq.ins
+++ /dev/null
@@ -1,61 +0,0 @@
-%
-%  This is file `deleq.ins', the installation file for the
-%  `deleq' package.  Last revised 1996/01/22. 
-%
-%  Copyright (c) 1994-97 by Mats Dahlgren <matsd@homenet.se>.
-%  All rights reserved.
-%
-%  You may use the `deleq' package freely, but at your own
-%  risk.  The author of deleq.dtx and deleq.ins (the
-%  complete `deleq' package distribution) can not be held
-%  responsible for any consequence of your using any of these
-%  files, or files created from these, including hardware,
-%  software, and data damage.  You may not make any changes to
-%  the files deleq.dtx or deleq.ins.  You are allowed to make 
-%  changes to the `\documentclass' and/or `\usepackage' commands 
-%  of the file `delex.tex'.  You may incorporate
-%  the code from these files in other files under different
-%  names, provided the original author is given full credit for
-%  his work and that you yourself take the complaints from the
-%  user(s) of your file(s).  You may freely distribute the
-%  files deleq.dtx and deleq.ins, provided: 1. You do not
-%  take money for the distribution or use of these files except
-%  for a nominal charge for diskettes and postage; and 2. You
-%  always distribute `deleq.dtx' and `deleq.ins' together
-%  at the same time. 
-% 
-\NeedsTeXFormat{LaTeX2e}[1996/12/01]
-\def\batchfile{deleq.ins}
-\input docstrip.tex
-
-\keepsilent
-\preamble
-
-
-Copyright (c) 1994-97 by Mats Dahlgren <matsd@homenet.se>.  
-All rights reserved.  See the file `deleq.ins' for information
-on how you may (re-)distribute the `deleq' package files.
-
-\endpreamble
-
-
-\generate{\file{deleq.sty}{\from{deleq.dtx}{paketkod}}%
-  \file{delex.tex}{\from{deleq.dtx}{exempelkod}}%
-}
-
-
-\Msg{************************************************************}
-\Msg{ }
-\Msg{  To finish the installation you have to move the file}
-\Msg{  `deleq.sty' into a directory searched by TeX.}
-\Msg{ }
-\Msg{  To type-set the documentation, run the file `deleq.dtx'}
-\Msg{  through LaTeX.}
-\Msg{ }
-\Msg{  To get an example file, run the file `delex.tex'}
-\Msg{  twice through LaTeX.}
-\Msg{ }
-\Msg{***********************************************************}
-%% 
-%%  end of file   deleq.ins
-%% 
diff --git a/Master/texmf-dist/tex/latex/deleq/deleq.sty b/Master/texmf-dist/tex/latex/deleq/deleq.sty
deleted file mode 100644
index 5f446d64022..00000000000
--- a/Master/texmf-dist/tex/latex/deleq/deleq.sty
+++ /dev/null
@@ -1,181 +0,0 @@
-%%
-%% This is file `deleq.sty',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% deleq.dtx  (with options: `paketkod')
-%% 
-%% 
-%% Copyright (c) 1994-97 by Mats Dahlgren <matsd@homenet.se>.
-%% All rights reserved.  See the file `deleq.ins' for information
-%% on how you may (re-)distribute the `deleq' package files.
-%% 
-\NeedsTeXFormat{LaTeX2e}[1996/12/01]
-\ProvidesPackage{deleq}[1997/07/07 v.4.41 Partial equation numbering]
-\def\deleqver{\textsf{deleq} version 4.41 (July~7, 1997)}
-\newcounter{deleq}[equation]
-\newcounter{Deleq}
-\newlength{\jotbaseline}
-\renewcommand{\thedeleq}{\ensuremath{\theequation\mathrm{\alph{deleq}}}}
-\renewcommand{\theDeleq}{\ensuremath{\mathrm{\alph{Deleq}}}}
-\def\@deleqnnum{(\thedeleq)}
-\def\@deleqrnum#1{(\ref{#1}\theDeleq)}
-\def\@eqrnum#1{(\ref{#1})}
-\def\@deqncr{{\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@ydeqncr}{\global\@eqpen\interdisplaylinepenalty \@ydeqncr}}
-\def\@ydeqncr{\@ifnextchar [{\@xdeqncr}{\@xdeqncr[\z@]}}
-\def\@xdeqncr[#1]{\ifnum0=`{\fi}\@@deqncr
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@deqncr{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \if@eqnsw\@deleqnnum\stepcounter{deleq}\fi
-     \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\newcommand{\@xeqrcr}[2]{\ifnum0=`{\fi}\@@eqrcr{#2}
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@eqrcr#1{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \if@eqnsw\@eqrnum{#1}\fi
-     \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\newcommand{\@xdeqrcr}[2]{\ifnum0=`{\fi}\@@deqrcr{#2}
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@deqrcr#1{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \if@eqnsw\@deleqrnum{#1}\fi
-     \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\def\@deqrarcr{{\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@ydeqrarcr}{\global\@eqpen\interdisplaylinepenalty \@ydeqrarcr}}
-\def\@ydeqrarcr{\@ifnextchar [{\@xdeqrarcr}{\@xdeqrarcr[\z@]}}
-\def\@xdeqrarcr[#1]{\ifnum0=`{\fi}\@@deqrarcr
-   \noalign{\penalty\@eqpen\vskip\jot\vskip #1\relax}}
-\def\@@deqrarcr{\let\@tempa\relax
-    \ifcase\@eqcnt \def\@tempa{& & &}\or \def\@tempa{& &}%
-      \else \def\@tempa{&}\fi
-     \@tempa \global\@eqnswtrue\global\@eqcnt\z@\cr}
-\newcommand{\nydeleqno}{\stepcounter{equation}\stepcounter{deleq}
-  \let\@currentlabel\thedeleq \eqno (\thedeleq)}
-\newcommand{\deleqno}{\refstepcounter{deleq} \let\@currentlabel\thedeleq
-  \eqno (\thedeleq)}
-\newcommand{\reqno}[1]{\setcounter{Deleq}{-1}\refstepcounter{Deleq}
-   \eqno (\ref{#1})}
-\newcommand{\rdeqno}[1]{\refstepcounter{Deleq}
-   \eqno (\ref{#1}\theDeleq)}
-\newcommand{\rndeqno}[1]{\setcounter{Deleq}{0}\refstepcounter{Deleq}
-   \eqno (\ref{#1}\theDeleq)}
-\newcommand{\eqreqno}[2][0pt]{{\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@xeqrcr{#1}{#2}}{\global\@eqpen\interdisplaylinepenalty
-    \@xeqrcr{#1}{#2}}}
-\newcommand{\deqreqno}[2][0pt]{\setcounter{Deleq}{0}\refstepcounter{Deleq}
-    {\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@xdeqrcr{#1}{#2}}{\global\@eqpen\interdisplaylinepenalty
-    \@xdeqrcr{#1}{#2}}}
-\newcommand{\ddeqreqno}[2][0pt]{\refstepcounter{Deleq}
-    {\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
-    \@xdeqrcr{#1}{#2}}{\global\@eqpen\interdisplaylinepenalty
-    \@xdeqrcr{#1}{#2}}}
-\newcommand{\arrlabel}[1]{\let\@currentlabel\theequation \label{#1}}
-\newcommand{\nydeqno}{\stepcounter{equation}\stepcounter{deleq}}
-\newcommand{\heqno}{\stepcounter{equation}}
-\def\where{\let\@tempa\relax \def\@tempa{& & &}
-     \@tempa {\hbox to .01\p@{}\rlap{\hskip -\displaywidth where}}\cr}
-\def\rem#1{\let\@tempa\relax \def\@tempa{& & &}
-     \@tempa {\hbox to .01\p@{}\rlap{\hskip -\displaywidth #1}}\cr}
-\def\@dlqnv{\setlength{\jotbaseline}{\baselineskip}%
-  \addtolength{\jotbaseline}{\jot}  \global\@eqnswtrue\m@th
-  \global\@eqcnt\z@\tabskip\@centering
-  $$\halign to\displaywidth\bgroup\@eqnsel\hskip\@centering
-  $\displaystyle\tabskip\z@{##}$&\global\@eqcnt\@ne
-  \hskip 2\arraycolsep \hfil${##}$\hfil
-  &\global\@eqcnt\tw@ \hskip 2\arraycolsep $\displaystyle\tabskip\z@{##}$\hfil
-   \tabskip\@centering&\llap{##}\tabskip\z@\cr}
-\newenvironment{deqarr}{\stepcounter{equation}\stepcounter{deleq}
-  \let\@currentlabel\thedeleq  \let\\\@deqncr  \@dlqnv}
-{\@@deqncr\egroup
-      \global\advance\c@deleq\m@ne$$\global\@ignoretrue}
-\newenvironment{ddeqar}{\stepcounter{deleq}
-  \let\@currentlabel\thedeleq  \let\\\@deqncr  \@dlqnv}
-{\enddeqarr}
-\newenvironment{deqn}{$$\refstepcounter{equation}\stepcounter{deleq}
-   \let\@currentlabel\thedeleq}
-  {\eqno \hbox{\@deleqnnum} $$\global\@ignoretrue}
-\newenvironment{ddeqn}{$$\refstepcounter{deleq} \let\@currentlabel\thedeleq}
-  {\enddeqn}
-\newenvironment{deqrarr}{\let\@currentlabel\theDeleq
-  \let\\\@deqrarcr   \@dlqnv}
-{\@deqrarcr   \egroup  $$\global\@ignoretrue}
-\newif\ifl@qn \l@qnfalse
-\DeclareOption{leqno}{%
-\global\l@qntrue%
-\renewcommand{\@deleqnnum}{\hbox to .01\p@{}\rlap{\reset@font\rmfamily
-  \hskip -\displaywidth(\thedeleq)}}
-\renewcommand{\nydeleqno}{\stepcounter{equation}\stepcounter{deleq}
-  \let\@currentlabel\thedeleq \leqno (\thedeleq)}
-\renewcommand{\deleqno}{\refstepcounter{deleq} \let\@currentlabel\thedeleq
-  \leqno (\thedeleq)}
-\renewcommand{\reqno}[1]{\setcounter{Deleq}{-1}\refstepcounter{Deleq}
-   \leqno (\ref{#1})}
-\renewcommand{\rdeqno}[1]{\refstepcounter{Deleq}
-   \leqno (\ref{#1}\theDeleq)}
-\renewcommand{\rndeqno}[1]{\setcounter{Deleq}{0}\refstepcounter{Deleq}
-   \leqno (\ref{#1}\theDeleq)}
-\renewcommand{\@eqrnum}[1]{\hbox to .01\p@{}\rlap{\reset@font\rmfamily
-        \hskip -\displaywidth(\ref{#1})}}
-\renewcommand{\@deleqrnum}[1]{\hbox to .01\p@{}\rlap{\reset@font\rmfamily
-        \hskip -\displaywidth(\ref{#1}\theDeleq)}}
-  }
-\DeclareOption{fleqn}{%
-\ifl@qn \AtBeginDocument{\addtolength{\mathindent}{1em}} \fi
-\renewenvironment{deqn}%
-  {\@beginparpenalty\predisplaypenalty
-   \@endparpenalty\postdisplaypenalty
-   \refstepcounter{equation}\stepcounter{deleq}
-   \let\@currentlabel\thedeleq%
-   \trivlist \item[]\leavevmode
-     \hb@xt@\linewidth\bgroup $\m@th% $
-     \displaystyle
-     \hskip\mathindent}%
-    {$\hfil % $
-     \displaywidth\linewidth\hbox{\@deleqnnum}%
-     \egroup
-   \endtrivlist}
-\renewenvironment{ddeqn}%
-  {\@beginparpenalty\predisplaypenalty
-   \@endparpenalty\postdisplaypenalty
-   \refstepcounter{deleq}
-   \let\@currentlabel\thedeleq%
-   \trivlist \item[]\leavevmode
-     \hb@xt@\linewidth\bgroup $\m@th% $
-     \displaystyle
-     \hskip\mathindent}%
-    {\enddeqn}
-\renewcommand{\@dlqnv}{%
-  \setlength{\jotbaseline}{\baselineskip}
-  \addtolength{\jotbaseline}{\jot}
-  \global\@eqcnt\z@
-  \tabskip\mathindent
-  \setlength\abovedisplayskip{\topsep}%
-  \ifvmode
-    \addtolength\abovedisplayskip{\partopsep}%
-  \fi
-  \addtolength\abovedisplayskip{\parskip}%
-  \setlength\belowdisplayskip{\abovedisplayskip}%
-  \setlength\belowdisplayshortskip{\abovedisplayskip}%
-  \setlength\abovedisplayshortskip{\abovedisplayskip}%
-  $$\everycr{}\halign to\linewidth% $$
-  \bgroup
-    \hskip\@centering
-    $\displaystyle\tabskip\z@skip{##}$\@eqnsel&%
-    \global\@eqcnt\@ne \hskip \tw@\arraycolsep \hfil${##}$\hfil&%
-    \global\@eqcnt\tw@ \hskip \tw@\arraycolsep
-    $\displaystyle{##}$\hfil \tabskip\@centering&%
-    \global\@eqcnt\thr@@
-    \hb@xt@\z@\bgroup\hss##\egroup\tabskip\z@skip\cr}
-}
-\DeclareOption*{\OptionNotUsed}
-\ProcessOptions
-\endinput
-%%
-%% End of file `deleq.sty'.
diff --git a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
index ae4ad7a0ef3..85bceec6fc9 100644
--- a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
+++ b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
@@ -102,7 +102,6 @@ depend dateiliste
 depend datenumber
 depend datetime
 depend decimal
-depend deleq
 depend delimtxt
 depend diagnose
 depend dialogl
diff --git a/Master/tlpkg/tlpsrc/deleq.tlpsrc b/Master/tlpkg/tlpsrc/deleq.tlpsrc
deleted file mode 100644
index 090fe58f80c..00000000000
--- a/Master/tlpkg/tlpsrc/deleq.tlpsrc
+++ /dev/null
@@ -1,2 +0,0 @@
-name deleq
-category Package