% macros and definitions

 \newcommand\fname{\begingroup \smaller\urlstyle{tt}\Url}

 \newcommand\vname{\begingroup \smaller\urlstyle{tt}\Url}

 % for class names, define our own url style

 \makeatletter  % protect @ names

 % \url@letstyle: New URL sty to premit break at any letters.

 % Based on \url@ttstyle

 \def\Url@letdo{% style assignments for tt fonts or T1 encoding

 \def\UrlBreaks{\do\a\do\b\do\c\do\d\do\e\do\f\do\g\do\h\do\i\do\j\do\k\do\l%

                \do\m\do\n\do\o\do\p\do\q\do\r\do\s\do\t\do\u\do\v\do\w\do\x%

                \do\y\do\z%

                \do\A\do\B\do\C\do\D\do\E\do\F\do\G\do\H\do\I\do\J\do\K\do\L%

                \do\M\do\N\do\O\do\P\do\Q\do\R\do\S\do\T\do\U\do\V\do\W\do\X%

                \do\Y\do\Z%

 }%

 \def\UrlBigBreaks{\do\.\do\@\do\\\do\/\do\!\do\_\do\|\do\%\do\;\do\>\do\]%

  \do\)\do\,\do\?\do\'\do\+\do\=\do\#\do\:\do@url@hyp}%

 \def\UrlNoBreaks{\do\(\do\[\do\{\do\<}% (unnecessary)

 \def\UrlSpecials{\do\ {\ }}%

 \def\UrlOrds{\do\*\do\-\do\~}% any ordinary characters that aren't usually

 \Urlmuskip = 0mu plus 1mu%

 }

 \def\url@letstyle{%

 \@ifundefined{selectfont}{\def\UrlFont{\sf}}{\def\UrlFont{\sffamily}}\Url@letdo

 }

 \makeatother  % unprotect @ names

 \newcommand\cname{\begingroup \smaller\urlstyle{let}\Url}

 \newcommand{\imgcredit}[1]

 {%

 \small

 [#1]

 }

 \newcommand{\chapquote}[2]

 {%

 \begin{quote}

 \emph{%

 ``#1''%

 }%

 \begin{flushright}

 {\scriptsize \sffamily [#2]}%

 \end{flushright}

 \end{quote}

 }

 % \urlfootnote{url}{day}{month}{year}

 \newcommand{\murlfootnote}[4]{\footnote{\url{{#1}} (last visit {#4}-{#3}-{#2})}}

 \newcommand{\murlfootnotebreak}[4]{\footnote{\url{{#1}}\\ \hspace*{6mm}(last visit {#4}-{#3}-{#2})}}

 % change margin command

 \def\changemargin#1#2{\list{}{\rightmargin#2\leftmargin#1}\item[]}

 \let\endchangemargin=\endlist