This is an old revision of the document!
A user contributed library for the EEPROM can be found here: https://github.com/IngloriousEngineer/Arduino
It is included in the Add-on package as well - the EEPROM is 24LC32AT-I and can be found on the first I2C bus (Wire not Wire1) at address 0x50
Example can be found Examples→DigiXEEPROM→Extensive_EEPROM_overview