<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\renewenvironment{specialtext}%
    {\par\setbox0\vbox\bgroup\hsize5cm\relax}%
    {\egroup
     \begin{center}\fbox{\box0}\end{center}}
</pre></body></html>