All created file-type resources, which are displayed in the general list on the left panel, have buttons (appear when hovering over a specific resource):

1. Clicking   deletes the selected resource.
2. Clicking opens the "Editing" form, where you can change the resource name or select another external file.
3. Clicking  opens the Explorer window, where you can select a directory on the computer system to save a copy of the file from the selected resource.