There are eight special configuration files that you can edit to change the behaviour of the program. These are all property files that can be changed with any text editor and they all have the same format of property = value. Note that the separator between the property and the value is '=', ':' or a whitespace character. To use these characters, escape them with a backslash. So for example, to enter the term java:com you would need to enter java\:com. For more details on escape sequences see the Sun api reference for the Property loader.