an.factory supports the following editing operations upon the Synth Object within the Tree View of a Child Window:
To access these features other than Move and Copy (which you do via "Drag and Drop"), right click over the Synth Object to activate the Synth Object's Context Sensitive Menu.
The Synth Object is only shown within a Tree View and is the first Object in the Tree View. The name of the Object identifies the type of file.
If the file is an AN200 SYSEX file, then you can add or remove the Pattern Collection via this option.
If the file is an AN200 SYSEX file, then you can add or remove the Song Collection via this option.