If endianness is working you should see the Devanagari Om: à¥
If UTF-16 surrogates are working you should see the Tai Xuan Jing monogram for Earth (three dashes): ð
This page is designed to demonstrate some of the Unicode interpretation issues in browsers. These issues can be called character swallowing, absorption, and ignoring in some cases. The offer us interesting possibilities for bypassing cross-site scripting filters and other protections which developers have come to trust and rely on.
The following characters all get treated as a space. Making things like <a href=#[180E]onclick=alert()> possible.
test 20 5F MEDIUM MATHEMATICAL SPACE // anything in the range U+2002 to U+200A works, so does U+205F