The Class Editor is to create you own Classes, edit ones you have already made, and in the future will allow you to edit existing Classes (from other data/list files).
The New button will allow the creation of a new Class.
The Edit button will allow you to edit the selected Class (Classes created within this Class Editor only at this stage).
The Delete button will remove the selected Class (Classes created within this Class Editor only at this stage).
The Copy button makes a copy of a selected Class. In this way you can slightly modify an existing class and give it a new name.
The Close button will allow you to exit back to PCGen.
Classes added will be saved into the customClasses.lst file.