Icons are movable graphic representations of disks, drawers, files, and programs that you manipulate with the mouse.
The Workbench uses the following types of icons:
A disk icon represents any disk that is available or accessible by the Workbench. Disk icons appear only in the Workbench window.
A tool icon represents a specific program, such as the Clock utility. When a tool icon opens, the program is started.
A project icon represents a file created or used by a tool, such as the Prefs Preset icons.