A simple example of how consuming something object makes it disappear and replaces it with something else.
Eating an Apple was created with Inform and has IFID B8D7FD85-4289-47FD-838F-9BB61062EA55. To play a work like this one, you need an interpreter program: many are available, among them Zoom
for Mac OS X and for Unix; Windows Frotz or Windows Glulxe for Windows.