From the fine manual:
ProcessNumericEntities
This option tells the editor to transform all characters that are out of the ASCII table to their relative Unicode numeric entities.
For example, if this option is set to true, the
Ϣ
sign will be transformed toϢ
. By default the option is set to false.Example:
FCKConfig.ProcessNumericEntities = true ;
So you just need to figure out where your FCKEditor configuration file is and add FCKConfig.ProcessNumericEntities = true;
to it.