5 files changed, 87 insertions, 22 deletions
diff --git a/Master/texmf-dist/doc/latex/chemscheme/README b/Master/texmf-dist/doc/latex/chemscheme/README
index 6736aec19ff..61c508aa4fc 100644
--- a/Master/texmf-dist/doc/latex/chemscheme/README
+++ b/Master/texmf-dist/doc/latex/chemscheme/README
@@ -1,14 +1,14 @@
-The chemscheme package - Support for chemical schemes
-----------------------------------------------------------------
-Maintained by Joseph A. Wright
-E-mail: joseph.wright@morningstar2.co.uk
-Released under the GNU General Public License
-See http://www.gnu.org/licenses/gpl.txt
-----------------------------------------------------------------
-
-The chemscheme package consists of two parts, both related to
-chemical schemes.  The package adds a scheme float type to the
-LaTeX default types figure and table. The scheme float type
-acts in the same way as those defined by the LaTeX kernel, but
-is intended for chemical schemes.  The package also provides a
-method for adding automatic chemical numbering to schemes.
+The chemscheme package - Support for chemical schemes
+----------------------------------------------------------------
+Maintained by Joseph A. Wright
+E-mail: joseph.wright@morningstar2.co.uk
+Released under the GNU General Public License
+See http://www.gnu.org/licenses/gpl.txt
+----------------------------------------------------------------
+
+The chemscheme package consists of two parts, both related to
+chemical schemes.  The package adds a scheme float type to the
+LaTeX default types figure and table. The scheme float type
+acts in the same way as those defined by the LaTeX kernel, but
+is intended for chemical schemes.  The package also provides a
+method for adding automatic chemical numbering to schemes.
diff --git a/Master/texmf-dist/doc/latex/chemscheme/chemscheme.pdf b/Master/texmf-dist/doc/latex/chemscheme/chemscheme.pdf
index 034d219ae2d..4fe88de3481 100644
--- a/Master/texmf-dist/doc/latex/chemscheme/chemscheme.pdf
+++ b/Master/texmf-dist/doc/latex/chemscheme/chemscheme.pdf
diff --git a/Master/texmf-dist/source/latex/chemscheme/chemscheme.dtx b/Master/texmf-dist/source/latex/chemscheme/chemscheme.dtx
index 569926167ca..89d7b0c8b52 100644
--- a/Master/texmf-dist/source/latex/chemscheme/chemscheme.dtx
+++ b/Master/texmf-dist/source/latex/chemscheme/chemscheme.dtx
@@ -8,7 +8,7 @@
 %
 % This work consists of the main source file chemscheme.dtx
 % and the derived files chemscheme.sty and chemscheme.pdf;
-% also included is the ChemDraw source file chemschem.cdx
+% also included is the ChemDraw source file chemscheme.cdx
 %
 %<*driver>
 \documentclass{ltxdoc}
@@ -28,7 +28,7 @@
 %</driver>
 % \fi
 %
-% \CheckSum{96}
+% \CheckSum{122}
 %
 % \CharacterTable
 %  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
@@ -49,14 +49,15 @@
 % \GetFileInfo{\jobname.sty}
 %
 % \changes{v1.0}{2007/07/21}{Initial public release}
+% \changes{v1.1}{2007/08/05}{Added float centring code}
 %
 % \DoNotIndex{\@ifclassloaded,\@undefined,\chapter,\CNlabel}
-% \DoNotIndex{\CNlabelsub,\compound,\DeclareOption,\else,\floatname}
-% \DoNotIndex{\fi,\global,\ifx,\let,\listof,\MessageBreak}
+% \DoNotIndex{\CNlabelsub,\compound,\DeclareOption,\def,\else}
+% \DoNotIndex{\floatname,\fi,\global,\ifx,\let,\listof,\MessageBreak}
 % \DoNotIndex{\NeedsTeXFormat,\newcommand,\newfloat,\newif}
 % \DoNotIndex{\newlistof,\PackageWarning,\ProcessOptions,\protect}
-% \DoNotIndex{\ProvidesPackage,\psfrag,\RequirePackage,\space}
-% \DoNotIndex{\textsf}
+% \DoNotIndex{\ProvidesPackage,\psfrag,\raggedleft,\RequirePackage}
+% \DoNotIndex{\relax,\space,\textsf}
 %
 % \title{\texttt{chemscheme} --- Support for chemical schemes%
 %   \thanks{This file describes version \fileversion, last revised
@@ -156,6 +157,31 @@
 % \cmd{\listschemes} contains the title of the scheme list (by
 % default \listschemes).  Both may be freely re-defined.
 %
+% \section{Horizontal positioning of all floats}
+%
+% \DescribeMacro{\floatcontentscentre}
+% \DescribeMacro{\floatcontentscenter}
+% \DescribeMacro{\floatcontentsleft}
+% \DescribeMacro{\floatcontentsright}
+% The LaTeX default is to position all float contents flush-left.
+% There is no ``hook'' provided to alter this.  The |chemscheme|
+% packages therefore provides commands to align all float contents
+% automatically.  As the macro names make clear,
+% \cmd{\floatcontentscentre} will make all floats centred (for users
+% speaking U.S.~English, the alternative spelling
+% \cmd{\floatcontentscenter} is also available).  The default
+% behaviour is restored using the command \cmd{\floatcontentsleft}.
+% Finally, \cmd{\floatcontentsright} is provided  for use if needed.
+% notice that the float positioning commands should be given
+% \emph{outside} floating environments, and apply to all subsequent
+% floats.
+%
+% It is important to note that the positioning mechanism used here
+% relies on a low-level hack of the LaTeX kernel.  This has been
+% tested with the standard LaTeX classes, the \textsf{memoir} class
+% and the \textsc{koma-script} bundled.  Other document classes may
+% not give the desired behaviour.
+%
 % \section{Reference numbers in graphics}
 %
 % \subsection{Background}
@@ -328,7 +354,7 @@
 %    \begin{macrocode}
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesPackage{chemscheme}%
-  [2007/07/21 v1.0 Support for chemical schemes]
+  [2007/08/05 v1.1 Support for chemical schemes]
 %    \end{macrocode}
 % The |psfrag| package is required to carry out the inclusion of
 % chemical numbers in graphics.  If the |memoir| package is not
@@ -408,6 +434,34 @@
 %    \end{macrocode}
 % \end{macro}
 %
+% \subsection{Positioning float contents}
+%
+% \begin{macro}{\floatcontentscentre}
+% \begin{macro}{\floatcontentscenter}
+% \begin{macro}{\floatcontentsleft}
+% \begin{macro}{\floatcontentsright}
+% In order to centre the content of all floats, a method is needed
+% to break into the mechanism.  None is provided by default,
+% but it can be achieved by patching \cmd{\@floatboxreset}.
+% User space switching commands are defined to turn centring on and
+% off.
+%    \begin{macrocode}
+\newcommand*{\floatcontentscentre}%
+  {\let\CHEMSCH@everyfloat\centering}
+\let\floatcontentscenter\floatcontentscentre
+\newcommand*{\floatcontentsleft}%
+  {\let\CHEMSCH@everyfloat\relax}
+\newcommand*{\floatcontentsright}%
+  {\let\CHEMSCH@everyfloat\raggedleft}
+\let\CHEMSCH@floatboxreset\@floatboxreset
+\floatcontentsleft
+\def\@floatboxreset{\CHEMSCH@everyfloat\CHEMSCH@floatboxreset}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
 % \subsection{Reference numbers in graphics}
 %
 % \begin{macro}{\chemschemerefmarker}
diff --git a/Master/texmf-dist/tex/latex/chemscheme/chemscheme.sty b/Master/texmf-dist/tex/latex/chemscheme/chemscheme.sty
index 9a21fa96f67..2f89ad65347 100644
--- a/Master/texmf-dist/tex/latex/chemscheme/chemscheme.sty
+++ b/Master/texmf-dist/tex/latex/chemscheme/chemscheme.sty
@@ -14,7 +14,7 @@
 %%  ----------------------------------------------------------------
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesPackage{chemscheme}%
-  [2007/07/21 v1.0 Support for chemical schemes]
+  [2007/08/05 v1.1 Support for chemical schemes]
 \RequirePackage{psfrag}
 \@ifclassloaded{memoir}{}
   {\RequirePackage{float}}
@@ -49,6 +49,16 @@
   {\floatname{scheme}{\schemename}
     \newcommand*{\listofschemes}[1][\listschemes]%
       {\listof{scheme}{#1}}}
+\newcommand*{\floatcontentscentre}%
+  {\let\CHEMSCH@everyfloat\centering}
+\let\floatcontentscenter\floatcontentscentre
+\newcommand*{\floatcontentsleft}%
+  {\let\CHEMSCH@everyfloat\relax}
+\newcommand*{\floatcontentsright}%
+  {\let\CHEMSCH@everyfloat\raggedleft}
+\let\CHEMSCH@floatboxreset\@floatboxreset
+\floatcontentsleft
+\def\@floatboxreset{\CHEMSCH@everyfloat\CHEMSCH@floatboxreset}
 \newcommand{\chemschemerefmarker}{TMP}
 \newcommand{\chemschemerefformat}{\textsf}
 \ifCHEMSCH@bpchem
diff --git a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
index 6eca69c01c7..3528664f294 100644
--- a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
+++ b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
@@ -112,6 +112,7 @@ depend Package/draftcopy
 depend Package/draftwatermark
 depend Package/dropping
 depend Package/dtk
+depend Package/dtxgallery
 depend Package/dvdcoll
 depend Package/eCards
 depend Package/easy