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