You can use character references to put SpecialCharacters in a wiki page.

Reference

See the definition at http://www.w3.org/TR/2004/REC-xml-20040204/#sec-references

ISO/IEC 10646 is the Universal multi-octet character set or UCS.

The HTML 4.01 documentation has lists of character with their corresponding character reference values.

Using character references

In order to use a character reference in text, enclose it in DoubleQuotationMarks. That prevents the & from being encoded separately.

Examples

The Façade pattern. A resistance of 1.25KΩ at 208° F.

The Riemann zeta function ζ(s) is defined over the complex plane for one complex variable.

See the CharacterReferenceTable for a large list of available characters.