The resources that are important to customize should be listed in an app-custom file. The app-custom file contains all of the necessary information to generate a customizing tool interface that is unique for each application. The customizing tool uses the application class to name app-custom files. By default, the customizing tool searches for the app-custom file in the following places, in the order listed. The first file found is used.
Locale is the locale in which custom is running.
The place where the customizing tool looks for the app-custom file can be changed by specifying the Custom.appCustomPath resource. The Group parameter can be any character string in any language you choose. If more than one word is used for the group or if it contains any double-byte character strings, it must be enclosed in quotation marks. You are limited to a maximum of 20 groups. The groups are listed on the Resource Category button on the Customizing Tool main window.