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\def\text{\sffamily\scalebox{10}{Xy}}
\sbox\mybox{\sffamily\color{black!25}\scalebox{10}{Xy}}
\def\HEIGHT{\ht\mybox}
\def\WIDTH{\wd\mybox}
\def\DEPTH{\dp\mybox}
\def\LLX{.15\WIDTH}
\def\LLY{\DEPTH+.15\HEIGHT}
\def\URX{.15\WIDTH}
\def\URY{.25\HEIGHT}
\begin{tikzpicture}[font=\sffamily,>=latex]
\draw [gray,thin]
(0,0) -- +(-3.5ex,0)
(0,\HEIGHT) -- +(-3.5ex,0)
(0,-\DEPTH) -- +(-3.5ex,0)
(\WIDTH,\HEIGHT) -- +(3.5ex,0)
(\WIDTH,-\DEPTH) -- +(3.5ex,0)
(0,-\DEPTH) -- +(0,-3.5ex)
(\WIDTH,-\DEPTH) -- +(0,-3.5ex)
;
\node [inner sep=0pt,anchor=base west] {\usebox\mybox};
\draw (0,0) -- (\WIDTH,0);% node [above,midway] {baseline};
\draw [->] (-2.5ex,0) -- +(0,-\DEPTH) node [midway,left] {depth};
\draw [->] (-2.5ex,0) -- +(0, \HEIGHT) node [midway,left] {height};
\draw [<->] (\WIDTH,-\DEPTH) ++(2.5ex,0) -- +(0,\DEPTH+\HEIGHT) node [midway,right] {totalheight};
\draw [<->] (0,-\DEPTH) ++(0,-2.5ex) -- +(\WIDTH,0) node [midway,below] {width};
\fill (-2.5ex,0) circle (.5pt);
\begin{scope}[blue]
\clip ([shift={(\LLX,\LLY)}]0,-\DEPTH) rectangle ([shift={(-\URX,-\URY)}]\WIDTH,\HEIGHT);
\node [inner sep=0pt,anchor=base west,color=blue!50!white] {\text};
\end{scope}
\begin{scope}[blue]
\draw ([shift={(\LLX,\LLY)}]0,-\DEPTH) rectangle ([shift={(-\URX,-\URY)}]\WIDTH,\HEIGHT);
\draw (\LLX,-\DEPTH+\LLY) -- ([shift={(-\URX,0)}]\WIDTH,-\DEPTH+\LLY);
\draw [->] (\LLX+.2\WIDTH,-\DEPTH+\LLY) -- (\LLX+.2\WIDTH,0) node [right,midway] {\scriptsize moves down};
\path [fill=white,draw] (\LLX,-\DEPTH+\LLY) circle (1pt);
\end{scope}
\begin{scope}[blue!50!black] %,every node/.append style={inner sep=2pt}]
\draw [->] (\LLX,0) -- (\LLX,\LLY-\DEPTH) node [right,midway] {\scriptsize lly};
\draw [->] (0,-\DEPTH+\LLY) -- ++(\LLX,0) node [above,midway] {\scriptsize llx};
\draw [->]
([shift={(-\URX,0)}]\WIDTH,0) --
([shift={(-\URX,-\URY)}]\WIDTH,\HEIGHT)
node [right,midway] {\scriptsize ury}
;
\draw [->]
([shift={(0,-\URY)}]0,\HEIGHT) --
([shift={(-\URX,-\URY)}]\WIDTH,\HEIGHT)
node [above,midway] {\scriptsize urx}
;
\end{scope}
\draw [thick] (0,-\DEPTH) rectangle (\WIDTH,\HEIGHT);
\path [fill=white,draw=black] (0,0) circle (1pt);
\path let
\p1 = (current bounding box.south west),
\p2 = (current bounding box.north east),
\p3 = (0,-\DEPTH),
\p4 = (\WIDTH,\HEIGHT)
in
(\x3-\x2+\x4,\y3) rectangle (\x4+\x3-\x1,\y4);
\end{tikzpicture}
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