=== Escaping of Special Characters ===
Note that special characters, eg hash sign, percent sign, must be escaped.
Escaping means that the special character will be processed one step later and it prevents
annoying error messages during compilation.
The <code>#</code> sign will be replaced by <code>\#</code>,
<br/>the <code>%</code> sign will be replaced by <code>\%</code>, etc.