Updates relevant files when a filetype sprite becomes available. The width of the objects is properly calculated, and the widest object sets the standard in the viewer. This applies to both the name and the sprite. Key shortcuts for the majority of functions. Also things that are not in the menus, like moving around in the viewer and running objects.
Key shortcuts are fully definable, and unused shortcuts can be used for external utilities.
The input focus will never be 'stolen' from another application, unless explicitly told to do so. A large number of things are customisable. Module is about 60K, written exclusively in assembler. Third-party extension modules for providing thumbnails for objects. JPEG, Draw, Sprite and ARMovie clients included.