% Rolf Niepraschk, 2020-05-03, Rolf.Niepraschk@gmx.de \listfiles\errorcontextlines=100 \documentclass[a4paper,draft,twoside]{article} \usepackage[dvipsnames]{xcolor} \usepackage[textwidth=12cm,marginparwidth=4cm]{geometry} \usepackage[final]{showexpl} \usepackage{iftex} \iftutex % LuaTeX, XeTeX \usepackage{fontspec} \setmonofont{DejaVuSansMono}[Scale=MatchUppercase] \else % old engines \usepackage[T1]{fontenc} \usepackage{lmodern} \usepackage[scaled]{DejaVuSansMono} \fi \lstset{% basicstyle=\ttfamily\small, commentstyle=\itshape\ttfamily\small, showspaces=false, showstringspaces=false, breaklines=true, backgroundcolor=\color{lightgray}, breakautoindent=true, captionpos=t } \iftrue \lstset{explpreset={numbers=left,numberstyle=\tiny,numbersep=.3em, xleftmargin=1em,columns=flexible,language={}}} \fi \usepackage[font=small,labelfont=bf,justification=raggedright,% singlelinecheck=false]{caption} \usepackage{amsmath} \AtBeginDocument{% \renewcommand*\lstlistlistingname{Examples} \renewcommand*\lstlistingname{Example} } \newcommand*{\MARKER}% {\noindent\strut\vrule \hrulefill~half text area~\hrulefill\vrule \hrulefill~half text area~\hrulefill\vrule \marginpar{\strut\vrule\hrulefill~margin area~\hrulefill\vrule}} \begin{filecontents*}{ex1.tex} Line 1 \par Line 2 \par Line 3 \par Line 4 \par Line 5 \par Line 6 \par Line 7 \par Line 8 \par Line 9 \par Line 10 \par Line 11 \par Line 12 \par Line 13 \end{filecontents*} \begin{document} \section*{The \LaTeX\ package \textsf{showexpl}} \bigskip \lstlistoflistings \subsection*{The \textsf{listings} parameters still works} \begin{LTXexample}[pos=t,numbers=none, codefile=\jobname-\theltxexample.tex] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \subsection*{The \texttt{pos}, \texttt{overhang}, and \texttt{caption} parameters} \begin{LTXexample}[pos=b,overhang=.5\marginparwidth+.5\marginparsep,% caption={The \texttt{overhang} parameter}] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \begin{LTXexample}[pos=l,hsep=50pt,width=55mm] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \subsection*{The \texttt{wide} parameter with inner and outer position} \begin{LTXexample}[pos=o,wide,caption={The \texttt{wide} parameter},% label=ex:Gustav] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \begin{LTXexample}[pos=i,wide] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} %-------------- \newpage \subsection*{More examples on an even (left) page} \begin{LTXexample}[pos=t] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \begin{LTXexample}[pos=b,overhang=.5\marginparwidth+.5\marginparsep,% captionpos=b,caption={The \texttt{overhang} parameter again},% label=ex:Fridolin] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \begin{LTXexample}[pos=l,hsep=50pt,width=55mm] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \begin{LTXexample}[pos=o,wide,captionpos=b,% caption={The \texttt{wide} parameter again}] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \MARKER \begin{LTXexample}[pos=i,wide] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} %-------------- \newpage \subsection*{Whole \LaTeX{} documents as example code and the para\-meters \texttt{preset}, \texttt{rframe}, and \texttt{rangeaccept}} \begin{LTXexample}[pos=r,wide,width=.65,preset=\LARGE,rframe={}] \documentclass[a4paper,twoside]{article} \begin{document} \begin{equation} \sigma(t)=\frac{1}{\sqrt{2\pi}} \int^t_0 e^{-x^2/2} dx \end{equation} \end{document} \end{LTXexample} \MARKER \begin{LTXexample}[wide,width=.75,preset=\footnotesize,rframe=single,% codefile=\jobname-\theltxexample.tex] \documentclass[a4paper,twoside]{article} \usepackage{amsmath} % enhancements for mathematical formulas \begin{document} \begin{equation}\label{eq:barwq} \begin{split} H_c&=\frac{1}{2n} \sum^n_{l=0}(-1)^{l}(n-{l})^{p-2} \sum_{l _1+\dots+ l _p=l}\prod^p_{i=1} \binom{n_i}{l _i}\\ &\quad\cdot[(n-l )-(n_i-l _i)]^{n_i-l _i}\cdot \Bigl[(n-l )^2-\sum^p_{j=1}(n_i-l _i)^2\Bigr]. \end{split} \end{equation} \end{document} \end{LTXexample} \LTXinputExample[% pos=r,backgroundcolor=\color{Goldenrod!50},% %firstline=3,lastline=6,% linerange={3-6,8-10},% float=tb,rangeaccept=true,% caption={[Floating Example]% This is a floating Example (parameter \texttt{rangeaccept=true})}]{ex1} \newpage \MARKER \subsection*{Using a graphic as the result} \begin{LTXexample}[pos=i,wide] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \begin{LTXexample}[pos=i,wide,rframe={},% graphic=result-picture]% graphic=\jobname-\theltxexample \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \begin{LTXexample}[caption={The \texttt{graphic} parameter},captionpos=b,% pos=i,wide,graphic={[width=.5\linewidth]result-picture}] \Large\LaTeX{} \LaTeX{} \LaTeX{} \LaTeX{} \end{LTXexample} \newpage \subsection*{The parameter \texttt{varwidth}} \bigskip \MARKER \begin{LTXexample}[caption={Fix width of the result (side-by-side default: \texttt{0.5\textbackslash linewidth})},% captionpos=b] \setlength{\unitlength}{1cm} \begin{picture}(2,2) \thicklines \thicklines \put(0,0){\line(1,1){2}} \put(0,2){\line(1,-1){2}} \end{picture} \end{LTXexample} \medskip \begin{LTXexample}[caption={[The \texttt{varwidth} parameter]% Width of the result reduced to the ``natural'' width (\texttt{varwidth=true})},varwidth,captionpos=b] \setlength{\unitlength}{1cm} \begin{picture}(2,2) \thicklines \put(0,0){\line(1,1){2}} \put(0,2){\line(1,-1){2}} \end{picture} \end{LTXexample} \medskip \begin{LTXexample}[caption={Fix width of the result (default: \texttt{\textbackslash linewidth})},% pos=t,captionpos=b] \setlength{\unitlength}{1cm} \begin{picture}(2,2) \thicklines \put(0,0){\line(1,1){2}} \put(0,2){\line(1,-1){2}} \end{picture} \end{LTXexample} \medskip \begin{LTXexample}[caption={[The \texttt{justification} parameter]% Result is centered (\texttt{varwidth=true})},% varwidth,captionpos=b,pos=t,justification=\centering] \setlength{\unitlength}{1cm} \begin{picture}(2,2) \thicklines \put(0,0){\line(1,1){2}} \put(0,2){\line(1,-1){2}} \end{picture} \end{LTXexample} \end{document}