The file selection tab allows you to add individual files or folders to be processed:
You can add as many files or folders as you wish to this list either by dragging and dropping folders or files on to the list, or by click the Add File or Add Folder toolbar buttons. Note: Only recognised images will be processed.
Clear image list when started
This option will clear the list of files and/or folders when the session is next loaded saving you time, if you process lots of different images regularly.
Use colour information in image if possible
This option will try to use any colour data contained in the image file to display the image. It is generally better to leave this option enabled unless you have a reason not to.