This macro function is mainly to assist macro authors cope with changes to the GroundSpeak site (around July 2008) which means that data (like notify emails) are now including entities rather than the actual character (or the UTF8 version of the character). This function will convert the entity to the corresponding Ansi character.
sData is a string containing the data to be converted. Any entities found in this data will be converted to the corresponding single character equivalent.
Example:
$data = EntityDecode("what have were here & < >")
msgok msg=$data
