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+%% $Id: pst-tree.tex 466 2011-02-28 17:13:11Z herbert $
+%% COPYRIGHT 1993, 1994, 1999 by Timothy Van Zandt, tvz@nwu.edu.
+%% COPYRIGHT 2000-2003 by Denis Girou.
+%% Copyright 2004- Herbert Voss
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2003/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% This Current Maintainer of this work is Herbert Voss
+%
+% This work consists of the file pstricks.tex, PostScript macros 
+% for Generic TeX.
+% See the PSTricks User's Guide for description.
+%
+\csname PSTreeLoaded\endcsname
+\let\PSTreeLoaded\endinput
+\ifx\PSTnodesLoaded\endinput\else\input pst-node.tex\fi\relax
+\ifx\PSTXKeyLoaded\endinput\else\input pst-xkey \fi
+%
+\def\fileversion{1.13}
+\def\filedate{2017/02/18}
+\message{ v\fileversion, \filedate (tvz,dg,hv)}
+%
+\edef\TheAtCode{\the\catcode`\@}
+\catcode`\@=11
+%
+\pst@addfams{pst-tree}
+\newbox\pstree@rootbox
+\newbox\pstree@box
+\def\pstree@succrow{%
+  \ifpstreeflip\def\pssubtree@vertical{\pssubtree@vertical@vflip}%
+  \else\def\pssubtree@vertical{\pssubtree@vertical@v}\fi
+%
+\def\pstree@node{\pstree@node@v}%
+%
+\def\pssubtree@horizontal{\pssubtree@horizontal@v}}%
+%
+\def\pssubtree@vertical@v{%
+  \vrule height \pst@dimc depth \pst@dimd width \z@
+  \ifnum\psnodecnt=\z@
+   \global\let\pstree@theleftprofile\pstree@leftprofile
+   \global\let\pstree@therightprofile\pstree@rightprofile
+  \else
+    \psk@thistreefit\pstree@therightprofile\pstree@leftprofile
+    \kern\the\pst@cnth sp
+    \pstree@zip\pstree@therightprofile
+    \pstree@rightprofile\pstree@therightprofile
+    \global\advance\pstree@cnt\pst@cnth
+    \pst@cnth=\pstree@cnt
+    \pstree@zip\pstree@leftprofile
+    \pstree@theleftprofile\pstree@theleftprofile
+  \fi
+  \box\pstree@box
+  \global\advance\psnodecnt 1\relax}%
+%
+\def\pssubtree@vertical@vflip{%
+  \vrule height \pst@dimc depth \pst@dimd width \z@
+  \ifnum\psnodecnt=\z@
+    \global\let\pstree@theleftprofile\pstree@leftprofile
+    \global\let\pstree@therightprofile\pstree@rightprofile
+  \else
+    \psk@thistreefit\pstree@theleftprofile\pstree@rightprofile
+    \kern-\pst@cnth sp
+    \pstree@zip\pstree@theleftprofile
+    \pstree@leftprofile\pstree@theleftprofile
+    \global\advance\pstree@cnt\pst@cnth
+    \pst@cnth=\pstree@cnt
+    \pstree@zip\pstree@rightprofile
+    \pstree@therightprofile\pstree@therightprofile
+  \fi
+  \box\pstree@box
+  \global\advance\psnodecnt 1\relax}%
+%
+\def\pstree@node@v{%
+  \edef\pstree@leftprofile{\psk@thistreenodesize\pst@dima,\pstree@stop,}%
+  \edef\pstree@rightprofile{\psk@thistreenodesize\pst@dimb,\pstree@stop,}%
+  \pssubtree@vertical}
+%
+\def\pssubtree@horizontal@v{%
+  \pstree@max\pstree@upprofile\pst@cntg
+  \pst@dimc=\pst@cntg sp
+  \pstree@max\pstree@downprofile\pst@cntg
+  \pst@dimd=\pst@cntg sp
+  \pstree@treebboxadjust
+  \edef\pstree@leftprofile{\number\pst@dima,\pstree@stop,}%
+  \edef\pstree@rightprofile{\number\pst@dimb,\pstree@stop,}%
+  \pssubtree@vertical}%
+%
+\def\pstree@tightfit#1#2{%
+  \pst@cnth=\z@
+  \edef\next{\noexpand\pstree@@tightfit#1\noexpand\@nil#2\noexpand\@nil}%
+  \next
+  \advance\pst@cnth\psk@thistreesep\relax
+  \advance\pst@cnth\pstree@tspace\relax
+  \gdef\pstree@tspace{\z@}}
+%
+\def\pstree@@tightfit#1,#2\@nil#3,#4\@nil{%
+  \ifnum#1=\pstree@stop
+    \let\next\relax
+  \else
+    \ifnum#3=\pstree@stop\let\next\relax
+    \else
+      \pst@cntg=#1
+      \advance\pst@cntg#3
+      \ifnum\pst@cntg>\pst@cnth\pst@cnth=\pst@cntg\fi
+      \def\next{\pstree@@tightfit#2\@nil#4\@nil}%
+    \fi
+  \fi
+  \next}
+%
+\def\pstree@loosefit#1#2{%
+  \pstree@max{#1}\pst@cnth
+  \pstree@max{#2}\pst@cntg
+  \advance\pst@cnth\pst@cntg
+  \advance\pst@cnth\psk@thistreesep\relax
+  \advance\pst@cnth\pstree@tspace\relax
+  \gdef\pstree@tspace{\z@}}
+%
+\def\tspace#1{%
+  \pst@@killglue
+  \pssetlength\pst@dimg{#1}%
+  \xdef\pstree@tspace{\number\pst@dimg}%
+  \ignorespaces}
+%
+\define@key[psset]{pst-tree}{treefit}[tight]{%
+  \@ifundefined{pstree@#1fit}%
+    {\@pstrickserr{Bad `treefit' parameter value: `#1'}\@ehpa}%
+    {\expandafter\let\expandafter\psk@treefit\csname pstree@#1fit\endcsname}}
+\psset[pst-tree]{treefit=tight}
+%
+\define@key[psset]{pst-tree}{thistreefit}[tight]{%
+  \@ifundefined{pstree@#1fit}%
+    {\@pstrickserr{Bad `treefit' parameter value: `#1'}\@ehpa}%
+    {\expandafter\let\expandafter\psk@thistreefit\csname pstree@#1fit\endcsname}}
+\psset[pst-tree]{thistreefit=tight}
+%
+\def\pstree@zip#1#2#3{%
+  \def\pst@tempg{}%
+  \edef\next{\noexpand\pstree@@zip#1\noexpand\@nil#2\noexpand\@nil}%
+  \next
+  \global\let#3\pst@tempg}
+%
+\def\pstree@@zip#1,#2\@nil#3,#4\@nil{%
+  \ifnum#1=\pstree@stop
+    \edef\pst@tempg{\pst@tempg#3,#4}%
+    \let\next\relax
+  \else
+    \ifnum#3=\pstree@stop
+      \pst@cntg=#1
+      \advance\pst@cntg-\pst@cnth
+      \edef\pst@tempg{\pst@tempg\the\pst@cntg,}%
+      \def\next{\pstree@@zip#2\@nil\pstree@stop,\@nil}%
+    \else
+      \edef\pst@tempg{\pst@tempg#3,}%
+      \def\next{\pstree@@zip#2\@nil#4\@nil}%
+    \fi
+  \fi
+  \next}
+%
+\def\pstree@max#1#2{%
+  \pst@cntg=\z@
+  \expandafter\pstree@@max#1#2=\pst@cntg}%
+%
+\def\pstree@@max#1,{%
+  \ifnum#1=\pstree@stop\else
+    \ifnum#1>\pst@cntg \pst@cntg=#1 \fi
+    \expandafter\pstree@@max
+  \fi}
+%
+\def\pstree@add#1{%
+  \def\pst@tempg{}%
+  \expandafter\pstree@@add#1%
+  \xdef#1{\pst@tempg\pstree@stop,}}
+%
+\def\pstree@@add#1,{%
+  \ifnum#1=\pstree@stop\else
+    \pst@cnth=#1
+    \advance\pst@cnth\pst@cntg
+    \xdef\pst@tempg{\pst@tempg\the\pst@cnth,}%
+    \expandafter\pstree@@add
+  \fi}
+%
+\newcount\psnodecnt
+\let\c@psnodecnt\psnodecnt
+\newcount\pstreelevel
+\let\c@pstreelevel\pstreelevel
+\newcount\pstreecnt
+\let\c@pstreecnt\pstreecnt
+\newcount\pstree@cnt
+%
+\def\pstree{\def\pst@par{}\pst@object{pstree}}
+\def\pstree@i{\def\pstree@makebox{\pst@@makebox}\pstree@ii}
+%
+\def\psTree{\def\pst@par{}\pst@object{psTree}}
+\def\psTree@i{\def\pstree@makebox{\pst@makelongbox}\pstree@ii}
+% hv --begin 1.00 2007-01-03 make it LaTeX-compatible
+%\def\endpsTree{\pst@endlongbox\ignorespaces}
+\def\endpsTree{\pst@endlongbox\csname ignorespacesafterend\endcsname}
+% hv --end
+\def\pstree@ii{%
+  \ifnum\pstreelevel=\z@
+    \let\pstree@savedshortput\pst@shortput
+    \psset{shortput=tab}%
+  \else
+    \pst@@killglue
+  \fi
+  \begingroup
+  \begingroup
+  \def\pstree@node{%
+    \xdef\pstree@next{%
+      \noexpand\@psttrue
+      \noexpand\def\noexpand\pst@tempa{\number\pst@dima}%
+      \noexpand\def\noexpand\pst@tempb{\number\pst@dimb}%
+      \noexpand\def\noexpand\pst@tempc{\number\pst@dimc}%
+      \noexpand\def\noexpand\pst@tempd{\number\pst@dimd}}%
+    \box\pstree@box}%
+  \def\pssubtree@horizontal{\pssubtree@horizontal@o}%
+  \def\pssubtree@vertical{\pssubtree@vertical@o}%
+  \global\let\pstree@next\relax
+  \pst@makebox\pstree@iii}
+%
+\def\pstree@iii{%
+  \global\setbox\pst@boxg=\box\pst@hbox
+  \endgroup
+  \setbox\pstree@rootbox=\box\pst@boxg
+  \@pstfalse
+  \pstree@next
+  \if@pst
+    \ifdim\wd\pstree@rootbox=\z@\else
+      \@pstrickserr{Extraneous space in root node}\@ehpa
+      \typeout{===>\the\wd\pst@hbox (rootbox)}
+      \wd\pstree@rootbox=\z@
+    \fi
+  \else
+    \@pstrickserr{Missing or bad root node
+    (level \the\pstreelevel, node \the\psnodecnt)}\@ehpa
+    \def\pstree@next{%
+    \def\pst@tempa{0}%
+    \def\pst@tempb{0}%
+    \def\pst@tempc{0}%
+    \def\pst@tempd{0}}%
+    \wd\pstree@rootbox=\z@
+  \fi
+  \pstree@savevalues
+  \begingroup
+  \pstree@initsuccvalues
+  \pstree@setlevelpar
+  \pstree@do}
+%
+\def\pstree{\def\pst@par{}\pst@object{pstree}}
+\def\pstree@i{\def\pstree@makebox{\pst@@makebox}\pstree@ii}
+%
+\def\psTree{\def\pst@par{}\pst@object{psTree}}
+\def\psTree@i{\def\pstree@makebox{\pst@makelongbox}\pstree@ii}
+% hv --begin 1.00 2007-01-03 make it LaTeX-compatible
+%\def\endpsTree{\pst@endlongbox\ignorespaces}
+\def\endpsTree{\pst@endlongbox\csname ignorespacesafterend\endcsname}
+% hv --end
+\def\pstree@ii{%
+  \ifnum\pstreelevel=\z@
+    \let\pstree@savedshortput\pst@shortput
+    \psset{shortput=tab}%
+  \else
+    \pst@@killglue
+  \fi
+  \begingroup
+  \begingroup
+  \def\pstree@node{%
+    \xdef\pstree@next{%
+      \noexpand\@psttrue
+      \noexpand\def\noexpand\pst@tempa{\number\pst@dima}%
+      \noexpand\def\noexpand\pst@tempb{\number\pst@dimb}%
+      \noexpand\def\noexpand\pst@tempc{\number\pst@dimc}%
+      \noexpand\def\noexpand\pst@tempd{\number\pst@dimd}}%
+    \box\pstree@box}%
+  \def\pssubtree@horizontal{\pssubtree@horizontal@o}%
+  \def\pssubtree@vertical{\pssubtree@vertical@o}%
+  \global\let\pstree@next\relax
+  \pst@makebox\pstree@iii}
+%
+\def\pstree@iii{%
+  \global\setbox\pst@boxg=\box\pst@hbox
+  \endgroup
+  \setbox\pstree@rootbox=\box\pst@boxg
+  \@pstfalse
+  \pstree@next
+  \if@pst
+    \ifdim\wd\pstree@rootbox=\z@\else
+      \@pstrickserr{Extraneous space in root node}\@ehpa
+      \typeout{===>\the\wd\pst@hbox (rootbox)}
+      \wd\pstree@rootbox=\z@
+    \fi
+  \else
+    \@pstrickserr{Missing or bad root node
+    (level \the\pstreelevel, node \the\psnodecnt)}\@ehpa
+    \def\pstree@next{%
+    \def\pst@tempa{0}%
+    \def\pst@tempb{0}%
+    \def\pst@tempc{0}%
+    \def\pst@tempd{0}}%
+    \wd\pstree@rootbox=\z@
+  \fi
+  \pstree@savevalues
+  \begingroup
+  \pstree@initsuccvalues
+  \pstree@setlevelpar
+  \pstree@do}
+
+%
+\def\pstree@setlevelpar{%
+  \advance\pstreelevel1
+  \let\psk@thislevelsep\relax
+  \let\psk@thistreesep\relax
+  \let\psk@thistreefit\relax
+  \let\psk@thistreenodesize\relax
+  \csname pstreehook\romannumeral\pstreelevel\endcsname
+  \use@par
+  \ifx\psk@thistreesep\relax      \let\psk@thistreesep\psk@treesep\fi
+  \ifx\psk@thistreenodesize\relax \let\psk@thistreenodesize\psk@treenodesize\fi
+  \ifx\psk@thistreefit\relax      \let\psk@thistreefit\psk@treefit\fi
+  \ifx\psk@thislevelsep\relax     \let\psk@thislevelsep\psk@levelsep
+                                  \let\psk@thislevelsepmode\psk@levelsepmode
+  \fi
+  \ifnum\psk@treemode=\pstree@predmode\else
+    \global\advance\pstreecnt1
+    \edef\pstree@thetree{\the\pstreecnt}%
+    \let\pstree@predmode\psk@treemode
+  \fi
+  \ifx\psk@thislevelsepmode\relax
+    \pst@dimg=\psk@thislevelsep\relax
+    \pst@cntg=0\@nameuse{pstree@levelsepadjust-\pstree@thetree-\the\pstreelevel}%
+    \advance\pst@dimg\pst@cntg sp
+    \edef\psk@thislevelsep{\number\pst@dimg sp}%
+  \fi
+  \ifnum\psk@treemode>1 \def\pst@tposflip{1 sub neg }\else\def\pst@tposflip{}\fi
+  \ifx\pstree@bboxadjust\@empty\else
+    \xdef\pstree@treebboxadjust{%
+      \pstree@bboxadjust
+      \ifpsshowbbox\noexpand\pstree@showbbox\fi}%
+    \gdef\pstree@bboxadjust{}%
+  \fi
+  \let\pst@thispsbox\@skiplevelfalse}
+%
+\def\pstree@predmode{-1}
+\def\pstree@savevalues{%
+  \edef\pstree@restorevalues{%
+    \noexpand\gdef\noexpand\pstree@theleftprofile{\pstree@theleftprofile}%
+    \noexpand\gdef\noexpand\pstree@therightprofile{\pstree@therightprofile}%
+    \noexpand\gdef\noexpand\pstree@theupprofile{\pstree@theupprofile}%
+    \noexpand\gdef\noexpand\pstree@thedownprofile{\pstree@thedownprofile}%
+    \noexpand\gdef\noexpand\pstree@tspace{\pstree@tspace}%
+    \noexpand\gdef\noexpand\pssucc{\pssucc}%
+    \global\psnodecnt=\the\psnodecnt\relax
+    \global\pstree@cnt=\the\pstree@cnt\relax}%
+  \let\pstree@savebboxadjust\pstree@treebboxadjust}
+  \def\pstree@initsuccvalues{%
+      \def\pstree@therightprofile{\pstree@stop,}%
+      \let\pstree@theleftprofile\pstree@therightprofile
+      \let\pstree@theupprofile\pstree@therightprofile
+      \let\pstree@thedownprofile\pstree@therightprofile
+      \psnodecnt=\z@
+      \pstree@cnt\z@
+      \gdef\pstree@tspace{\z@}%
+      \let\pspred\pssucc}
+  \def\pssucc{T}
+  \pstree@initsuccvalues
+  \def\pstree@down{%
+    \pstree@succrow
+    \pstree@makebox{\pstree@vertical{\lower}}}
+  \def\pstree@up{%
+    \pstree@succrow
+    \pstree@makebox{\pstree@vertical{\raise}}}
+  \def\pstree@levelsepadjust#1#2{%
+% DG/SR modification begin - May 14, 1997 - Patch 1
+% Problem with levelsep=*...
+%\pst@cntg=0\@nameuse{pstree@levelsepadjust-#1}%
+    \pst@cntg=0\@nameuse{pstree@levelsepadjust-#1}
+% DG/SR modification end
+    \ifnum#2>\pst@cntg
+      \expandafter\xdef\csname pstree@levelsepadjust-#1\endcsname{#2}%
+    \fi}
+% DG/SR modification begin - October 28, 1999 - Patch 5 - For plain TeX
+  \ifx\@undefined\@auxout\newwrite\@auxout\fi
+% DG/SR modification end
+  \def\pstree@initlevelsepadjust{%
+    \@ifundefined{@latexerr}{%
+        \immediate\openin1 \jobname.pst
+        \ifeof1 \else\input \jobname.pst\fi
+        \immediate\closein1
+        \csname newwrite\endcsname\pstree@auxout
+        \immediate\openout\pstree@auxout \jobname.pst }{\let\pstree@auxout\@auxout}%
+      \global\let\pstree@initlevelsepadjust\relax}
+  \newcount\pstree@stop
+  \pstree@stop=-987654321
+  \def\pstree@vertical#1{%
+    \pst@cntg=\ifpstreeflip-\fi\wd\pst@hbox
+    \divide\pst@cntg 2
+    \pstree@add\pstree@theleftprofile
+    \pstree@add\pstree@therightprofile
+    \pst@dimg=\psk@thislevelsep\relax
+    \ifx\psk@thislevelsepmode\relax \pstree@vertlevelsepadjust{#1}\fi
+    \global\setbox\pstree@box=\hbox{%
+        \vrule height \pst@tempc sp depth \pst@tempd sp width \z@
+        \unhbox\pstree@rootbox
+        #1\pst@dimg\hbox to\z@{\hss\unhbox\pst@hbox\hss}}%
+    \if@skiplevel\skiplevel@vertical\else\endgroup\fi
+    \edef\pstree@leftprofile{\pst@tempa,\pstree@theleftprofile}%
+    \edef\pstree@rightprofile{\pst@tempb,\pstree@therightprofile}%
+    \pst@dimc=\ht\pstree@box
+    \pst@dimd=\dp\pstree@box
+    \ifpsshowbbox
+        \pstree@max\pstree@leftprofile\pst@cntg
+        \pst@dima=\pst@cntg sp
+        \pstree@max\pstree@rightprofile\pst@cntg
+        \pst@dimb=\pst@cntg sp
+        \pstree@showbbox
+    \fi
+    \ifPst@draft
+        \pstree@max\pstree@leftprofile\pst@cntg
+        \pst@dima=\pst@cntg sp
+        \pstree@max\pstree@rightprofile\pst@cntg
+        \pst@dimb=\pst@cntg sp
+        \pstree@draft
+    \fi
+    \dp\pstree@box=\z@
+    \ht\pstree@box=\z@
+    \pstree@restorevalues
+    \pssubtree@vertical
+    \global\let\pstree@treebboxadjust\pstree@savebboxadjust
+    \endgroup
+    \ifnum\pstreelevel>\z@\expandafter\ignorespaces\fi}
+%
+\def\pstree@vertlevelsepadjust#1{%
+  \ifx\if@filesw\iffalse\else
+    \ifx#1\lower
+      \pst@dimh=\pst@tempd sp
+      \advance\pst@dimh\ht\pst@hbox
+    \else
+      \pst@dimh=\pst@tempc sp
+      \advance\pst@dimh\dp\pst@hbox
+    \fi
+    \immediate\write\@auxout{%
+      \string\pstree@levelsepadjust{\pstree@thetree-\the\pstreelevel}{\number\pst@dimh}}%
+  \fi}
+%
+\def\pstree@succcolumn{%
+  \def\pssubtree@vertical{\pssubtree@vertical@h}%
+  \def\pssubtree@horizontal{\pssubtree@horizontal@h}%
+  \def\pstree@node{\pstree@node@h}}%
+%
+  \def\pssubtree@horizontal@h{%
+    \xdef\pstree@theleftprofile{\number\pst@dima,\pstree@theleftprofile}%
+    \xdef\pstree@therightprofile{\number\pst@dimb,\pstree@therightprofile}%
+    \ifnum\psnodecnt=\z@
+      \global\let\pstree@theupprofile\pstree@upprofile
+      \global\let\pstree@thedownprofile\pstree@downprofile
+      \box\pstree@box
+    \else
+      \ifpstreeflip\pssubtree@horizontal@@hflip\else\pssubtree@horizontal@@h\fi
+    \fi
+    \global\advance\psnodecnt 1\relax}
+%
+\def\pssubtree@horizontal@@h{%
+  \psk@thistreefit\pstree@thedownprofile\pstree@upprofile
+  \global\advance\pstree@cnt\pst@cnth
+  \lower\the\pstree@cnt sp\box\pstree@box
+  \pstree@zip\pstree@thedownprofile\pstree@downprofile\pstree@thedownprofile
+  \pst@cnth=\pstree@cnt
+  \pstree@zip\pstree@upprofile\pstree@theupprofile\pstree@theupprofile}
+%
+\def\pssubtree@horizontal@@hflip{%
+  \psk@thistreefit\pstree@theupprofile\pstree@downprofile
+  \global\advance\pstree@cnt\pst@cnth
+  \raise\the\pstree@cnt sp\box\pstree@box
+  \pstree@zip\pstree@theupprofile\pstree@upprofile\pstree@theupprofile
+  \pst@cnth=\pstree@cnt
+  \pstree@zip\pstree@downprofile\pstree@thedownprofile\pstree@thedownprofile}
+%
+\def\pstree@node@h{%
+  \edef\pstree@upprofile{\psk@thistreenodesize\pst@dimc,\pstree@stop,}%
+  \edef\pstree@downprofile{\psk@thistreenodesize\pst@dimd,\pstree@stop,}%
+  \pssubtree@horizontal@h}%
+%
+\def\pssubtree@vertical@h{%
+  \pstree@max\pstree@leftprofile\pst@cntg
+  \pst@dima=\pst@cntg sp
+  \pstree@max\pstree@rightprofile\pst@cntg
+  \pst@dimb=\pst@cntg sp
+  \pstree@treebboxadjust
+  \edef\pstree@upprofile{\number\pst@dimc,\pstree@stop,}%
+  \edef\pstree@downprofile{\number\pst@dimd,\pstree@stop,}%
+  \pssubtree@horizontal@h}%
+%
+\newif\if@psrighttree
+\def\pstree@right{%
+  \@psrighttreetrue
+  \pstree@succcolumn
+  \pstree@makebox\pstree@horizontal}
+%
+\def\pstree@left{%
+  \@psrighttreefalse
+  \pstree@succcolumn
+  \pstree@makebox\pstree@horizontal}
+%
+\def\pstree@horizontal{%
+  \ifdim\wd\pst@hbox=\z@\else
+    \@pstrickserr{Extraneous space in tree successors}\@ehpa
+    \typeout{===>\the\wd\pst@hbox (hbox)}
+  \fi
+  \pst@cntg=\ifpstreeflip\ht\else\dp\fi\pst@hbox
+  \divide\pst@cntg 2
+  \pstree@add\pstree@theupprofile
+  \pstree@add\pstree@thedownprofile
+% DG/SR modification begin - Sep. 24, 1997 - Patch 3
+%\ifx\psk@thislevelsepmode\relax
+%\pstree@horizlevelsepadjust
+%\fi
+% DG/SR modification end
+  \pst@dimg\psk@thislevelsep\relax
+  \global\setbox\pstree@box=\hbox{%
+    \unhbox\pstree@rootbox
+    \kern\if@psrighttree\else-\fi\pst@dimg
+    \ifpstreeflip\lower\else\raise\fi\pst@cntg sp\box\pst@hbox}%
+% DG/SR modification begin - Sep. 24, 1997 - Patch 3
+  \ifx\psk@thislevelsepmode\relax
+    \pstree@horizlevelsepadjust
+  \fi
+% DG/SR modification end
+  \if@psrighttree
+    \pst@dimh=\pst@dimg
+    \pstree@max\pstree@therightprofile\pst@cntg
+    \global\advance\pst@dimh\pst@cntg sp
+    \global\pst@dimg=\pst@tempa sp
+  \else
+    \pstree@max\pstree@theleftprofile\pst@cntg
+    \global\advance\pst@dimg\pst@cntg sp
+    \global\pst@dimh=\pst@tempb sp
+  \fi
+  \if@skiplevel\skiplevel@horizontal\else\endgroup\fi
+  \pst@dima=\pst@dimg
+  \pst@dimb=\pst@dimh
+  \edef\pstree@upprofile{\pst@tempc,\pstree@theupprofile}%
+  \edef\pstree@downprofile{\pst@tempd,\pstree@thedownprofile}%
+  \dp\pstree@box=\z@
+  \ht\pstree@box=\z@
+  \wd\pstree@box=\z@
+  \ifpsshowbbox
+    \pstree@max\pstree@upprofile\pst@cntg
+    \pst@dimc=\pst@cntg sp
+    \pstree@max\pstree@downprofile\pst@cntg
+    \pst@dimd=\pst@cntg sp
+    \pstree@showbbox
+  \fi
+  \ifPst@draft
+    \pstree@max\pstree@upprofile\pst@cntg
+    \pst@dimc=\pst@cntg sp
+    \pstree@max\pstree@downprofile\pst@cntg
+    \pst@dimd=\pst@cntg sp
+    \pstree@draft
+  \fi
+  \pstree@restorevalues
+  \pssubtree@horizontal
+  \endgroup
+  \ifnum\pstreelevel>\z@\expandafter\ignorespaces\fi}
+%
+% DG/SR modification begin - Sep. 24, 1997 - Patch 2
+%\def\pstree@horizlevelsepadjust#1{%
+\def\pstree@horizlevelsepadjust{%
+% DG/SR modification end
+  \ifx\if@filesw\iffalse\else
+    \if@psrighttree
+      \pst@dimh=\pst@tempb sp
+      \pstree@max\pstree@theleftprofile\pst@cntg
+      \advance\pst@dimh\pst@cntg sp
+    \else
+      \pst@dimh=\pst@tempa sp
+      \pstree@max\pstree@therightprofile\pst@cntg
+      \advance\pst@dimh\pst@cntg sp
+    \fi
+    \immediate\write\@auxout{%
+      \string\pstree@levelsepadjust{\pstree@thetree-\the\pstreelevel}{\number\pst@dimh}}%
+    \fi}
+%
+\define@key[psset]{pst-tree}{treemode}[0]{%
+  \pst@cntg=\ifx#1U\@empty2\else\ifx#1R\@empty1\else\ifx#1L\@empty3\else0\fi\fi\fi
+  \relax
+  \edef\psk@treemode{\the\pst@cntg}%
+  \ifcase\pst@cntg
+    \let\pstree@do\pstree@down\or
+    \let\pstree@do\pstree@right\or
+    \let\pstree@do\pstree@up\or
+    \let\pstree@do\pstree@left
+  \fi}
+\psset[pst-tree]{treemode=0}
+%
+\let\pstree@do\pstree@down
+\define@key[psset]{pst-tree}{treesep}[0.75cm]{%
+  \pssetlength\pst@dimg{#1}%
+  \edef\psk@treesep{\number\pst@dimg}}%
+\psset[pst-tree]{treesep=.75cm}
+%
+\define@key[psset]{pst-tree}{thistreesep}{%
+  \pssetlength\pst@dimg{#1}%
+  \edef\psk@thistreesep{\number\pst@dimg}}%
+%\psset[pst-tree]{thistreesep=.75cm}
+%
+\define@key[psset]{pst-tree}{treenodesize}[-1pt]{%
+  \pssetlength\pst@dimg{#1}%
+  \ifdim\pst@dimg<\z@
+    \let\psk@treenodesize\number
+  \else
+    \edef\psk@treenodesize{\number\pst@dimg\noexpand\@gobble}%
+\fi}
+\psset[pst-tree]{treenodesize=-1pt}
+%
+\define@key[psset]{pst-tree}{thistreenodesize}[-1pt]{%
+  \pssetlength\pst@dimg{#1}%
+  \ifdim\pst@dimg<\z@
+    \let\psk@thistreenodesize\number
+  \else
+    \edef\psk@thistreenodesize{\number\pst@dimg\noexpand\@gobble}%
+  \fi}
+\psset[pst-tree]{thistreenodesize=-1pt}
+%
+\define@key[psset]{pst-tree}{levelsep}[2cm]{%
+  \pst@expandafter{\pst@ifstar\psset@@levelsep}{#1}\@nil}
+\def\psset@@levelsep#1\@nil{%
+  \pst@@getlength{#1}\psk@levelsep
+  \if@star
+    \pstree@initlevelsepadjust
+    \let\psk@levelsepmode\relax
+  \else
+    \def\psk@levelsepmode{}%
+  \fi}
+\psset[pst-tree]{levelsep=2cm}
+\define@key[psset]{pst-tree}{thislevelsep}{%
+  \pst@expandafter{\pst@ifstar\psset@@thislevelsep}{#1}\@nil}
+\def\psset@@thislevelsep#1\@nil{%
+  \pst@@getlength{#1}\psk@thislevelsep
+  \if@star
+    \pstree@initlevelsepadjust
+    \let\psk@thislevelsepmode\relax
+  \else
+    \def\psk@thislevelsepmode{}%
+\fi}
+%
+\define@boolkey[psset]{pst-tree}[ps]{treeflip}[true]{}
+\psset[pst-tree]{treeflip=false}
+%
+\def\pstree@node@o{%
+  \leavevmode
+  \hbox{%
+    \vrule height \pst@dimc depth \pst@dimd width \z@
+    \kern\pst@dima
+    \box\pstree@box
+    \kern\pst@dimb}}
+%
+\def\pssubtree@vertical@o{%
+  \pstree@max\pstree@leftprofile\pst@cntg
+  \pst@dima=\pst@cntg sp
+  \pstree@max\pstree@rightprofile\pst@cntg
+  \pst@dimb=\pst@cntg sp
+  \pstree@treebboxadjust
+  \pstree@node}
+%
+\def\pssubtree@horizontal@o{%
+  \pstree@max\pstree@upprofile\pst@cntg
+  \pst@dimc=\pst@cntg sp
+  \pstree@max\pstree@downprofile\pst@cntg
+  \pst@dimd=\pst@cntg sp
+  \pstree@treebboxadjust
+  \pstree@node}
+%
+\def\pstree@outer{%
+  \def\pstree@node{\pstree@node@o}%
+  \def\pssubtree@vertical{\pssubtree@vertical@o}%
+  \def\pssubtree@horizontal{\pssubtree@horizontal@o}%
+  \pstreelevel=\z@
+  \def\pstree@predmode{-1}%
+  \def\pst@tposflip{}%
+  \let\pst@thisbox\relax
+  \let\pst@shortput\pstree@savedshortput}
+%
+\let\pstree@savedshortput\ignorespaces
+\pstree@outer
+%
+\define@boolkey[psset]{pst-tree}[ps]{showbbox}[true]{}
+\psset[pst-tree]{showbbox=false}
+%
+\def\pstree@showbbox{%
+  \setbox\pstree@box=\hbox{%
+    \psframe[linewidth=0,linecolor=black,linestyle=solid,fillstyle=none]%
+      (-\pst@dima,-\pst@dimd)(\pst@dimb,\pst@dimc)%
+    \box\pstree@box}}%
+%
+\def\pstree@draft{%
+  \setbox\pstree@box=\hbox{%
+    \psframe[linewidth=0,linecolor=black,linestyle=solid,fillstyle=none]%
+      (-\pst@dima,-\pst@dimd)(\pst@dimb,\pst@dimc)}}%
+%
+\define@key[psset]{pst-tree}{edge}[\ncline]{%
+  \def\psedge{#1}%
+  \ifx\psedge\@none\def\psedge##1##2{}\fi}
+\psset[pst-tree]{edge=\ncline}
+%
+\def\pspred{T}
+\def\pstree@makenodebox{%
+  \pst@@killglue
+  \let\pst@thispsbox\pstree@outer
+  \pst@makebox}
+%
+\def\begin@treenode{%
+  \pst@@killglue
+  \begingroup
+  \use@par
+  \global\let\pstree@edge\psedge
+  \xdef\pssucc{\pspred-\the\psnodecnt}}
+%
+\def\MakeShortTnput#1{\def\end@treenode{\@ifnextchar#1{\tnput@}{\end@@treenode}}}
+\MakeShortTnput{~}
+%
+\def\end@@treenode{%
+  \pstree@bboxadjust
+  \gdef\pstree@bboxadjust{}%
+  \ifpsshowbbox\pstree@showbbox\fi
+  \pstree@node
+  \endgroup
+  \ifnum\pstreelevel>\z@
+    \pstree@edge{\pspred}{\pssucc}%
+    \expandafter\pst@shortput
+  \else
+    \expandafter\ignorespaces
+  \fi}
+%
+\def\pstree@bboxadjust{}
+\def\pstree@setbboxadjust#1#2{%
+  \pssetlength\pst@dimg{#1}%
+  \xdef\pstree@bboxadjust{%
+  \pstree@bboxadjust#2\number\pst@dimg sp\relax}}
+%
+\define@key[psset]{pst-tree}{bbl}{\pstree@setbboxadjust{#1}{\pst@dima=}}
+\define@key[psset]{pst-tree}{bbr}{\pstree@setbboxadjust{#1}{\pst@dimb=}}
+\define@key[psset]{pst-tree}{bbh}{\pstree@setbboxadjust{#1}{\pst@dimc=}}
+\define@key[psset]{pst-tree}{bbd}{\pstree@setbboxadjust{#1}{\pst@dimd=}}
+\define@key[psset]{pst-tree}{xbbl}{\pstree@setbboxadjust{#1}{\advance\pst@dima}}
+\define@key[psset]{pst-tree}{xbbr}{\pstree@setbboxadjust{#1}{\advance\pst@dimb}}
+\define@key[psset]{pst-tree}{xbbh}{\pstree@setbboxadjust{#1}{\advance\pst@dimc}}
+\define@key[psset]{pst-tree}{xbbd}{\pstree@setbboxadjust{#1}{\advance\pst@dimd}}
+%
+\let\pstree@treebboxadjust\relax
+\def\Tn{\def\pst@par{}\pst@object{Tn}}
+\def\Tn@i{%
+  \pst@@killglue
+  \global\let\pssucc\pspred
+  \begingroup
+  \pst@dima=\z@
+  \pst@dimb=\z@
+  \pst@dimc=\z@
+  \pst@dimd=\z@
+  \setbox\pstree@box=\hbox{}%%
+  \pstree@node
+  \endgroup
+  \ignorespaces}
+%
+\def\Tp{\def\pst@par{}\pst@object{Tp}}
+\def\Tp@i{%
+  \begin@treenode
+  \pst@dima=\z@
+  \pst@dimb=\z@
+  \pst@dimc=\z@
+  \pst@dimd=\z@
+  \setbox\pstree@box=\hbox{%
+    \pst@newnode{\pssucc}{10}{0 0 }{\tx@InitPnode}}%
+  \end@treenode}
+%
+\def\Tc{\def\pst@par{}\pst@object{Tc}}
+\def\Tc@i#1{%
+  \begin@treenode
+  \pssetlength\pst@dima{#1}%
+  \pst@dimb=\pst@dima
+  \pst@dimc=\pst@dima
+  \pst@dimd=\pst@dima
+  \Pst@nodealignfalse
+  \setbox\pstree@box=\hbox{\cnode@ii(\z@,\z@){#1}{\pssucc}}%
+  \end@treenode}
+%
+\def\TC{\def\pst@par{}\pst@object{TC}}
+\def\TC@i{\Tc@i{\psk@radius}}
+%
+\def\Toval{\def\pst@par{}\pst@object{Toval}}
+\def\Toval@i{\pstree@makenodebox{\Toval@ii\ovalnode@ii}}
+\def\Toval@ii#1{%
+  \begin@treenode
+  \Pst@nodealigntrue
+  \setbox\pstree@box=\hbox{#1\pssucc}%
+  \pst@dima=\wd\pstree@box
+  \divide\pst@dima 2
+  \pst@dimb=\pst@dima
+  \pst@dimc=\ht\pstree@box
+  \pst@dimd=\dp\pstree@box
+  \setbox\pstree@box=\hbox to\z@{\hss\unhbox\pstree@box\hss}%
+  \dp\pstree@box=\z@
+  \ht\pstree@box=\z@
+  \end@treenode%
+}
+%
+\def\Tcircle{\def\pst@par{}\pst@object{Tcircle}}
+\def\Tcircle@i{\pstree@makenodebox{\Toval@ii\circlenode@ii}}
+% DG/SR modification begin - Mar.  7, 2003 - Patch 6
+\def\TCircle{\pst@object{TCircle}}
+\def\TCircle@i{\pst@@killglue\pst@makebox{\Toval@ii\Circlenode@ii}}
+% DG/SR modification end
+%
+\def\Tf{\def\pst@par{}\pst@object{Tf}}
+\def\Tf@i{\Toval@ii{\fnode@ii()}}
+%
+\def\Tdia{\def\pst@par{}\pst@object{Tdia}}
+\def\Tdia@i{\pstree@makenodebox{\Toval@ii\dianode@ii}}
+%
+\def\Ttri{\def\pst@par{}\pst@object{Ttri}}
+\def\Ttri@i{\pstree@makenodebox{\Ttri@ii}}
+\def\Ttri@ii{%
+  \begin@treenode
+  \Pst@nodealigntrue
+  \setbox\pstree@box=\hbox{\trinode@ii\pssucc}%
+  \pst@dima=\pst@dimg % Set by \pst@triboxsep
+  \pst@dimb=\wd\pstree@box
+  \advance\pst@dimb-\pst@dima
+  \pst@dimc=\ht\pstree@box
+  \pst@dimd=\dp\pstree@box
+  \setbox\pstree@box=\hbox to\z@{\hss\unhbox\pstree@box\hss}%
+  \dp\pstree@box=\z@
+  \ht\pstree@box=\z@
+  \end@treenode%
+}
+\def\Tr{\def\pst@par{}\pst@object{Tr}}
+% SR modification begin - Oct. 27, 1996
+%\def\Tr@i{\pstree@makenodebox{\Tr@ii{\begingroup\rnode@ii}}}
+\def\Tr@i{\pstree@makenodebox{\Tr@ii{\rnode@iii\rnode@iv}}}
+% SR modification end
+\def\Tr@ii#1{%
+  \begin@treenode
+  \def\pstree@nodehook{%
+    \xdef\pstree@next{\pst@dima=\number\pst@dima sp\relax}}%
+  \Pst@nodealigntrue
+  \setbox\pstree@box\hbox{#1\pssucc}%
+  \pstree@next
+  \pst@dimb=\wd\pstree@box
+  \advance\pst@dimb-\pst@dima
+  \pst@dimc=\ht\pstree@box
+  \pst@dimd=\dp\pstree@box
+  \setbox\pstree@box\hbox to\z@{\kern-\pst@dima\unhbox\pstree@box\hss}%
+  \ht\pstree@box=\z@
+  \dp\pstree@box=\z@
+  \end@treenode}
+%
+\def\TR{\def\pst@par{}\pst@object{TR}}
+% DG modification begin - Oct. 25, 1996
+%\def\TR@i{\pstree@makenodebox{\Tr@ii{\Rnode@ii}}}
+\def\TR@i{\pstree@makenodebox{\Tr@ii{\rnode@iii\Rnode@ii}}}
+% DG modification end
+\def\Tdot{\def\pst@par{}\pst@object{Tdot}}
+\def\Tdot@i{%
+  \begin@treenode
+  \def\pstree@nodehook{\xdef\pstree@next{%
+    \pst@dima=\number\pst@dima sp\relax
+    \pst@dimc=\number\pst@dimb sp\relax}}%
+  \Pst@nodealignfalse
+  \setbox\pstree@box=\hbox{\dotnode@ii(\z@,\z@)\pssucc}%
+  \pstree@next
+  \pst@dimb=\pst@dima
+  \pst@dimd=\pst@dimc
+  \end@treenode}
+%
+\define@key[psset]{pst-tree}{fansize}[1cm]{\pst@@getlength{#1}\psk@fansize}
+\psset[pst-tree]{fansize=1cm}
+\def\Tfan{\def\pst@par{}\pst@object{Tfan}}
+\def\Tfan@i{%
+  \addto@par{edge=none}%
+  \begin@treenode
+  \solid@star
+  \pst@dimb=\psk@fansize
+  \pst@dimd=\pslinewidth
+  \advance\pst@dimb-\pst@dimd
+  \divide\pst@dimb 2
+  \divide\pst@dimd 2
+  \ifodd\psk@treemode\relax
+    \pst@dima=\pst@dimd
+    \pst@dimc=\pst@dimb
+  \else
+    \pst@dima=\pst@dimb
+    \pst@dimc=\pst@dimd
+  \fi
+  \setbox\pstree@box=\hbox{%
+    \pst@newnode{\pssucc}{16}{}{%
+      /Y 0 def
+      /X 0 def
+      /l \pst@number\pst@dima def
+      /r l def
+      /u \pst@number\pst@dimc def
+      /d u def
+      /NodePos { \tx@GetRnodePos } def}%
+    \def\pst@linetype{1}%
+    \nc@object{Closed}{\pspred}{\pssucc}{.5}{%
+      tx@Dict begin \psline@iii pop end
+      /w \pst@number\pst@dimb CLW 2 div sub def
+      /m \ifodd\psk@treemode false \else true \fi def
+      \tx@Tfan}}%
+  \pst@dimb=\pst@dima
+  \pst@dimd=\pst@dimc
+  \end@treenode}
+%
+\define@key[psset]{pst-tree}{tnsep}[{}]{%
+  \def\pst@tempg{#1}%
+  \ifx\pst@tempg\@empty
+    \def\psk@tnsep{\number\pslabelsep sp}%
+  \else
+    \pst@@getlength{#1}\psk@tnsep
+\fi}
+\psset[pst-tree]{tnsep={}}
+%
+\define@key[psset]{pst-tree}{tnyref}[{}]{\def\psk@tnyref{#1}}%
+\psset[pst-tree]{tnyref={}}
+%
+\define@key[psset]{pst-tree}{tnheight}[\ht\strutbox]{\edef\psk@tnheight{#1}}
+\psset[pst-tree]{tnheight=\ht\strutbox}
+%
+\define@key[psset]{pst-tree}{tndepth}[\dp\strutbox]{\edef\psk@tndepth{#1}}
+\psset[pst-tree]{tndepth=\dp\strutbox}
+%
+\define@key[psset]{pst-tree}{tnpos}[{}]{%
+  \def\pst@tempg{#1}%
+  \ifx\pst@tempg\@empty
+    \def\psk@tnpos{%
+    \ifcase\psk@treemode b\or r\or a\or l\fi}%
+    \else
+      \@ifundefined{pstree@tnput@#1}%
+        {\@pstrickserr{Bad tnpos: `#1'}\@ehpa}%
+        {\edef\psk@tnpos{#1}}%
+  \fi}
+\psset[pst-tree]{tnpos={}}
+%
+\def\tnput@#1{\def\pst@par{}\pst@object{tnput}}
+\def\tnput@i{\pstree@makenodebox{\tnput@ii}}
+\def\tnput@ii{%
+  \begingroup
+  \use@par
+  \xdef\next{%
+    \if@star\noexpand\pst@starbox\fi
+    \noexpand\def\noexpand\psk@thistndepth{\psk@tndepth}%
+    \noexpand\def\noexpand\psk@thistnheight{\psk@tnheight}%
+    \noexpand\def\noexpand\psk@thistnyref{\psk@tnyref}%
+    \noexpand\def\noexpand\psk@thistnsep{\psk@tnsep}%
+    \expandafter\noexpand\csname pstree@tnput@\psk@tnpos\endcsname}%
+  \endgroup
+  \next
+  \end@treenode}
+%
+\@namedef{pstree@tnput@b}{%
+\pstree@tnput@@v\pst@dimd\ht\dp\lower\psk@thistnheight}
+\@namedef{pstree@tnput@a}{%
+\pstree@tnput@@v\pst@dimc\dp\ht\raise\psk@thistndepth}
+%
+\def\pstree@tnput@@v#1#2#3#4#5{%
+  \pst@dimh=\wd\pst@hbox
+  \pst@dimg=\psk@href\pst@dimh
+  \advance\pst@dimg\pst@dimh
+  \divide\pst@dimg 2
+  \advance\pst@dimh-\pst@dimg
+  \ifdim\pst@dimg>\pst@dima \pst@dima=\pst@dimg\fi
+  \ifdim\pst@dimh>\pst@dimb \pst@dimb=\pst@dimh\fi
+  \pst@dimh=\psk@thistnsep\relax
+  \ifdim\pst@dimh<\z@ \pst@dimh=-\pst@dimh
+  \else\advance\pst@dimh#1\fi
+  \pssetlength\dimen@{#5}%
+  \ifdim\dimen@>#2\pst@hbox
+    \advance\pst@dimh\dimen@\relax
+  \else
+    \advance\pst@dimh#2\pst@hbox
+  \fi
+  \setbox\pstree@box=\hbox{%
+    \box\pstree@box
+    #4\pst@dimh\hbox to\z@{\kern-\pst@dimg\unhbox\pst@hbox\hss}}%
+  #1=#3\pstree@box
+  \dp\pstree@box=\z@
+  \ht\pstree@box=\z@}
+%
+\@namedef{pstree@tnput@l}{%
+  \pstree@tnput@@h\pst@dima{%
+    \hss
+    \lower\pst@dimg\box\pst@hbox
+    \kern\pst@dimh
+    \box\pstree@box}}
+%
+\@namedef{pstree@tnput@r}{%
+  \pstree@tnput@@h\pst@dimb{%
+  \box\pstree@box
+  \kern\pst@dimh
+  \lower\pst@dimg\box\pst@hbox
+  \hss}}%
+%
+\def\pstree@tnput@@h#1#2{%
+  \ifx\psk@thistnyref\@empty
+    \pssetlength\pst@dimg\psk@vref
+  \else
+    \pst@dimg=\ht\pst@hbox
+    \advance\pst@dimg\dp\pst@hbox
+    \pst@dimg=\psk@thistnyref\pst@dimg
+    \advance\pst@dimg-\dp\pst@hbox
+  \fi
+  \pst@dimh=\psk@thistnsep\relax
+  \ifdim\pst@dimh<\z@ \pst@dimh=-\pst@dimh\else\advance\pst@dimh#1\fi
+  #1=\pst@dimh
+  \advance#1\wd\pst@hbox
+  \setbox\pstree@box=\hbox to\z@{#2}%
+  \ifdim\ht\pstree@box>\pst@dimc \pst@dimc=\ht\pstree@box\fi
+  \ifdim\dp\pstree@box>\pst@dimd \pst@dimd=\dp\pstree@box\fi
+  \dp\pstree@box=\z@
+  \ht\pstree@box=\z@}
+%
+\newif\if@skiplevel
+\def\skiplevel{\def\pst@par{}\pst@object{skiplevel}}
+\def\skiplevel@i{\def\pstree@makebox{\pst@@makebox}\skiplevel@ii}
+\def\skiplevel@ii{%
+  \pst@@killglue
+  \begingroup
+  \let\pssucc\pspred
+  \def\pst@tempa{0}%
+  \def\pst@tempb{0}%
+  \def\pst@tempc{0}%
+  \def\pst@tempd{0}%
+  \setbox\pstree@rootbox=\hbox{}%
+  \pstree@savevalues
+  \begingroup
+  \pstree@initsuccvalues
+  \pstree@setlevelpar
+  \@skipleveltrue
+  \pstree@do}
+% DG/SR modification begin - Aug. 31, 1999 - Patch 4
+%\def\pstree@gettop#1{\expandafter\pstree@@gettop#1\@nil}
+%\def\pstree@@gettop#1,#2\@nil{#1}
+% DG/SR modification end
+\def\skiplevel@horizontal{%
+% DG/SR modification begin - Aug. 31, 1999 - Patch 4
+%\pst@dimc=\pstree@gettop\pstree@theupprofile sp
+%\pst@dimd=\pstree@gettop\pstree@thedownprofile sp
+  \edef\pstree@upprofile{\pst@tempc,\pstree@theupprofile}%
+  \edef\pstree@downprofile{\pst@tempd,\pstree@thedownprofile}%
+  \pstree@max\pstree@upprofile\pst@cntg
+  \pst@dimc=\pst@cntg sp
+  \pstree@max\pstree@downprofile\pst@cntg
+  \pst@dimd=\pst@cntg sp
+% DG/SR modification end
+  \pstree@treebboxadjust
+  \gdef\pstree@treebboxadjust{}%
+  \xdef\pstree@next{%
+    \noexpand\def\noexpand\pst@tempc{\number\pst@dimc}%
+    \noexpand\def\noexpand\pst@tempd{\number\pst@dimd}}%
+  \endgroup
+  \pstree@next}
+%
+\def\skiplevel@vertical{%
+% DG/SR modification begin - Aug. 31, 1999 - Patch 4
+%\pst@dima=\pstree@gettop\pstree@theleftprofile sp
+%\pst@dimb=\pstree@gettop\pstree@therightprofile sp
+  \edef\pstree@leftprofile{\pst@tempa,\pstree@theleftprofile}%
+  \edef\pstree@rightprofile{\pst@tempb,\pstree@therightprofile}%
+  \pstree@max\pstree@leftprofile\pst@cntg
+  \pst@dima=\pst@cntg sp
+  \pstree@max\pstree@rightprofile\pst@cntg
+  \pst@dimb=\pst@cntg sp
+% DG/SR modification end
+  \pstree@treebboxadjust
+  \gdef\pstree@treebboxadjust{}%
+  \xdef\pstree@next{%
+    \noexpand\def\noexpand\pst@tempa{\number\pst@dima}%
+    \noexpand\def\noexpand\pst@tempb{\number\pst@dimb}}%
+  \endgroup
+  \pstree@next}
+%
+\def\skiplevels{\def\pst@par{}\pst@object{skiplevels}}
+\def\skiplevels@i#1{%
+  \pst@@killglue
+  \begingroup
+  \pst@cnta=#1\relax
+  \edef\skiplevels@num{\the\pst@cnta}%
+  \def\pstree@makebox{\pst@makelongbox}%
+  \def\endskiplevels{}%
+  \loop
+    \ifnum\pst@cnta>\z@
+    \advance\pst@cnta-1
+    \expandafter\def\expandafter\endskiplevels\expandafter{%
+      \endskiplevels\pst@endlongbox}
+    \skiplevel@ii
+  \repeat
+  \expandafter\def\expandafter\endskiplevels\expandafter{%
+    \endskiplevels\endgroup\ignorespaces}
+  \ignorespaces}
+%
+\catcode`\@=\TheAtCode\relax
+\endinput
+%%
+%% END: pst-tree.tex