Unusual characters like mathematical symbols, meaurment units, and other symbols are referenced for use on web pages . This collection of symbols is only a short list of the many possibilities in unicode. Unfortunately, there is no way to be certain everybody viewing your web pages will be able to see these symbols. However, I only list those that are nearly universal. Anybody who can read this page can see the unusual character with unicodes below 256 because ASCII codes are part of Unicodes. The others characters listed seem to be standard on most web-browsers for most operating systems. Unicode is a way of representing all sorts of characters from nearly any language including asian languages, mathematics, and braille. To learn more about how to use all of these characters, see the Unicode website.

Unicodes & ASCII codes
for symbols on web pages