escaped characters: \\
\# \$ \% \& \_ \{ \} \\
other characters: \\
\textasciitilde \texttildelow $\sim$ \^{} \textasciicircum \textbackslash $\vert$ $\vert$ $<$ $>$ \\
foreign characters: \\
{\"a} {\^e} {\`i} {\.i} {\o} {\'u} {\aa} {\c c} {\u g} {\l} {\~n} {\h o} {\v r} {\ss} {\r u}