"gucharmap
"First, when you're testing anything involving character encoding, gucharmap is invaluable (Figure 1).
"Every Unicode character is in some category, shown in the list on the left -- in addition to Basic Latin, Latin-1 Supplement (accented characters), Greek, Cyrillic, Katakana etc. there are categories for Braille, Cuneiform, punctuation, mathematics, music and so forth.
"The Character Details tab tells you the Unicode, UTF-8, UTF-16 and XML/HTML codes for the character.
"If you have a character from a web page or email and don't know what it is, just paste it into gucharmap's Search->Find field (Figure 2)."
