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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
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\xy@{\save }{\save@ }%
\xy@{@(}{\senter@ }%
\xy@{,}{\comma@@ }%
\xy@{;}{\swap@ }%
\xy@{@=}{\if \sempty@ \else \xywarning@ {loading on top of non-empty stack}\sinit@ \fi \let \comma@@ =\spushc@ }%
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\xy@{}{\enter@ \cplusthec@ }%
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\xy@{}{\czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@{}{\comma@@ }%
\xy@{}{\A@ =-.5\L@c \advance \A@ .5\R@c \B@ =-.5\D@c \advance \B@ .5\U@c \let \nextii@ =\zeroit@ }%
\xy@{}{\cfromp@ }%
\xy@{}{\enter@ \cplusthec@ }%
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\xy@{}{\expandafter \vfromslide@ \the \toks 9 }%
\xy@{}{\czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@{}{\leave@ }%
\xy@{}{\spushc@ \let \comma@@ =\relax }%
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\xy@{\connect \crvi {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
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\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{\POS @i @) }}{}%
\xy@{@i}{\sinit@ }%
\xy@{@)}{\sleave@ }%
\xy@{\restore }{\leave@ }%
\xy@{ENTRY "2,1"}{\Row =2 \Col =1\relax \cfromid@ {2,1}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "2,2"}{\Row =2 \Col =2\relax \cfromid@ {2,2}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "2,3"}{\Row =2 \Col =3\relax \cfromid@ {2,3}\pfromc@ }%
\xy@@ix@{{++[o][F=]}{a}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
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\xy@{~/{}}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[ru]}{\def \thematrixCOORD@@ {[ru]}}%
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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
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\xy@@ix@{{\dir }{-}}\relax 
\xy@{\connect \dir {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
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\xy@@ix@{{!Ch\dir }{>}}\relax 
\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{}}{}%
\xy@{\restore }{\leave@ }%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
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\xy@{~/{}}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[dr]}{\def \thematrixCOORD@@ {[dr]}}%
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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
\xy@{PATHaction={\preconnect \dir {-}}}{}%
\xy@@ix@{{\dir }{-}}\relax 
\xy@{\connect \dir {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{>}}\relax 
\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{}}{}%
\xy@{\restore }{\leave@ }%
\xy@{ENTRY "2,4"}{\Row =2 \Col =4\relax \cfromid@ {2,4}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "3,1"}{\Row =3 \Col =1\relax \cfromid@ {3,1}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "3,2"}{\Row =3 \Col =2\relax \cfromid@ {3,2}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "3,3"}{\Row =3 \Col =3\relax \cfromid@ {3,3}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "3,4"}{\Row =3 \Col =4\relax \cfromid@ {3,4}\pfromc@ }%
\xy@@ix@{{++[o][F=]}{ab}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
\xy@{~={\save @(,;@={+/dr 3pc/,p+/ur 3pc/}\restore \preconnect \crvi {-}}}{}%
\xy@{~/{\POS @i @) }}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[dddd]}{\def \thematrixCOORD@@ {[dddd]}}%
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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
\xy@{PATHaction={\save @(,;@={+/dr 3pc/,p+/ur 3pc/}\restore \preconnect \crvi {-}}}{}%
\xy@{\save }{\save@ }%
\xy@{@(}{\senter@ }%
\xy@{,}{\comma@@ }%
\xy@{;}{\swap@ }%
\xy@{@=}{\if \sempty@ \else \xywarning@ {loading on top of non-empty stack}\sinit@ \fi \let \comma@@ =\spushc@ }%
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\xy@{}{\enter@ \cplusthec@ }%
\xy@@ix@{{dr 3pc}}\relax 
\xy@{}{\expandafter \vfromslide@ \the \toks 9 }%
\xy@{}{\czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@{}{\comma@@ }%
\xy@{}{\A@ =-.5\L@c \advance \A@ .5\R@c \B@ =-.5\D@c \advance \B@ .5\U@c \let \nextii@ =\zeroit@ }%
\xy@{}{\cfromp@ }%
\xy@{}{\enter@ \cplusthec@ }%
\xy@@ix@{{ur 3pc}}\relax 
\xy@{}{\expandafter \vfromslide@ \the \toks 9 }%
\xy@{}{\czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@{}{\leave@ }%
\xy@{}{\spushc@ \let \comma@@ =\relax }%
\xy@{\restore }{\leave@ }%
\xy@@ix@{{\crvi }{-}}\relax 
\xy@{\connect \crvi {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{>}}\relax 
\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{\POS @i @) }}{}%
\xy@{@i}{\sinit@ }%
\xy@{@)}{\sleave@ }%
\xy@{\restore }{\leave@ }%
\xy@{ENTRY "4,1"}{\Row =4 \Col =1\relax \cfromid@ {4,1}\pfromc@ }%
\xy@@ix@{{\entrybox }{{\txt {start}} \ar [r] }}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
\xy@{~={\preconnect \dir {-}}}{}%
\xy@{~/{}}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[r]}{\def \thematrixCOORD@@ {[r]}}%
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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
\xy@{PATHaction={\preconnect \dir {-}}}{}%
\xy@@ix@{{\dir }{-}}\relax 
\xy@{\connect \dir {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{>}}\relax 
\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{}}{}%
\xy@{\restore }{\leave@ }%
\xy@{ENTRY "4,2"}{\Row =4 \Col =2\relax \cfromid@ {4,2}\pfromc@ }%
\xy@@ix@{{++[o][F=]}{\emptyset }}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
\xy@{~={\preconnect \dir {-}}}{}%
\xy@{~/{}}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[uur]}{\def \thematrixCOORD@@ {[uur]}}%
\xy@{}{\expandafter \let \expandafter \next@ \csname Q@2,3\endcsname \ifx \next@ \relax \xyerror@RC {2,3}\else \next@ \fi }%
\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
\xy@{PATHaction={\preconnect \dir {-}}}{}%
\xy@@ix@{{\dir }{-}}\relax 
\xy@{\connect \dir {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{>}}\relax 
\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{}}{}%
\xy@{\restore }{\leave@ }%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
\xy@{~={\preconnect \dir {-}}}{}%
\xy@{~/{}}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[ddr]}{\def \thematrixCOORD@@ {[ddr]}}%
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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
\xy@{PATHaction={\preconnect \dir {-}}}{}%
\xy@@ix@{{\dir }{-}}\relax 
\xy@{\connect \dir {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{>}{\def \PLACEf@ {{1}}\PLACEedgec@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{>}}\relax 
\xy@{\drop !Ch\dir {>}}{\expandafter \drop@ \the \toks 9 }%
\xy@{}{\Cbreak@@ }%
\xy@{}{\Clast@@ }%
\xy@{}{\setupDirection@ }%
\xy@{PATHaction/{}}{}%
\xy@{\restore }{\leave@ }%
\xy@{ENTRY "5,1"}{\Row =5 \Col =1\relax \cfromid@ {5,1}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "5,2"}{\Row =5 \Col =2\relax \cfromid@ {5,2}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "5,3"}{\Row =5 \Col =3\relax \cfromid@ {5,3}\pfromc@ }%
\xy@@ix@{{\entrybox }{}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{ENTRY "5,4"}{\Row =5 \Col =4\relax \cfromid@ {5,4}\pfromc@ }%
\xy@@ix@{{++[o][F=]}{ba}}\relax 
\xy@{}{\expandafter \dropentry@ \the \toks 9}%
\xy@{\save }{\save@ }%
\xy@{\afterPATH {\afterar@@ }}{\def \PATHslide@@ {\z@ }}%
\xy@{~={\save @(,;@={+/ur 3pc/,p+/dr 3pc/}\restore \preconnect \crvi {-}}}{}%
\xy@{~/{\POS @i @) }}{}%
\xy@{~<{|<*h\dir {}}}{}%
\xy@{~>{|>*h\dir {>}}}{}%
\xy@{~+{}}{}%
\xy@{}{\pfromc@ }%
\xy@{[uuuu]}{\def \thematrixCOORD@@ {[uuuu]}}%
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\xy@{}{\setupDirection@ \dimen@ =\PATHslide@@ \dimen@ii =-\sinDirection \dimen@ \ifPATHomitslide@@ \else \advance \X@p \dimen@ii \fi \advance \X@c \dimen@ii \dimen@ii = \cosDirection \dimen@ \ifPATHomitslide@@ \else \advance \Y@p \dimen@ii \fi \advance \Y@c \dimen@ii \PATHomitslide@@false \resetupDirection@ }%
\xy@{PATHaction={\save @(,;@={+/ur 3pc/,p+/dr 3pc/}\restore \preconnect \crvi {-}}}{}%
\xy@{\save }{\save@ }%
\xy@{@(}{\senter@ }%
\xy@{,}{\comma@@ }%
\xy@{;}{\swap@ }%
\xy@{@=}{\if \sempty@ \else \xywarning@ {loading on top of non-empty stack}\sinit@ \fi \let \comma@@ =\spushc@ }%
\xy@{{+/ur 3pc/,p+/dr 3pc/}}{\enter@ {\pfromthep@ \basefromthebase@ }}%
\xy@{}{\enter@ \cplusthec@ }%
\xy@@ix@{{ur 3pc}}\relax 
\xy@{}{\expandafter \vfromslide@ \the \toks 9 }%
\xy@{}{\czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@{}{\comma@@ }%
\xy@{}{\A@ =-.5\L@c \advance \A@ .5\R@c \B@ =-.5\D@c \advance \B@ .5\U@c \let \nextii@ =\zeroit@ }%
\xy@{}{\cfromp@ }%
\xy@{}{\enter@ \cplusthec@ }%
\xy@@ix@{{dr 3pc}}\relax 
\xy@{}{\expandafter \vfromslide@ \the \toks 9 }%
\xy@{}{\czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@{}{\leave@ }%
\xy@{}{\spushc@ \let \comma@@ =\relax }%
\xy@{\restore }{\leave@ }%
\xy@@ix@{{\crvi }{-}}\relax 
\xy@{\connect \crvi {-}}{\expandafter \preconnect@ \the \toks 9 }%
\xy@{|}{}%
\xy@{}{\enter@ {\pfromthep@ }\Creset@@ \def \PLACEf@ {{.5}}\let \PLACEedgep@@ =\PLACEedgep@ \let \PLACEedgec@@ =\PLACEedgec@ }%
\xy@{<}{\def \PLACEf@ {{0}}\PLACEedgep@@ }%
\xy@{}{\expandafter \Calong@@ \PLACEf@ \czeroEdge@ }%
\xy@{}{\leave@ }%
\xy@@ix@{{!Ch\dir }{}}\relax 
\xy@{\drop !Ch\dir {}}{\expandafter \drop@ \the \toks 9 }%
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