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\begin{tikzpicture}
\definecolor{variablecolor}{named}{cyan}
\draw (-2,-2) rectangle (2,2);
% Script {{{
\begin{scope}[shift={(-0.5,1.25)}]
\node[draw=black,rounded corners=5] (code) at (0,0) {\texttt{> {\color{variablecolor}x} = 0.025;}};
\end{scope}
% }}}
% Document {{{
\begin{scope}[shift={(1,-0.75)}, scale=1.25]
\draw (0.2,0.705) -| (-0.5,-0.705) -| (0.5,0.405) -- cycle;
\draw[line width=2] (-0.4,0.5) -- (0.2,0.5);
\draw[thick] %
(-0.4,0.3) -- (0.4,0.3) %
(-0.4,0.1) -- (0.4,0.1) %
(-0.4,-0.1) -- (0.4,-0.1) %
(-0.4,-0.3) -- node[inner sep=1.5,circle,midway,variablecolor,draw=black,fill=white](variable) {\(x\)} (0.4,-0.3) %
(-0.4,-0.5) -- (0.4,-0.5) %
;
\end{scope}
% }}}
\draw[thick,-stealth, shorten >=10, variablecolor] (code.-160) |- (variable);
\end{tikzpicture}
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