# Encoding question mark in TikZ

I’m trying to draw the question mark that is sometimes displayed when there are encoding issues: �

This is my solution:

```\tikz[baseline=(wi.base)]{
\node[fill=black,rotate=45,inner sep=.1ex,text height=1.8ex,text width=1.8ex] {};
\node[font=\color{white}] (wi) {?};
}
```
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