It is straightforward to make a rule that anything with parts must mention all those parts during an EXAMINE command:
Now whenever we look at any object with components, we will first see the description, then a list of parts which belong to it. The following refinement brings in elements of later chapters, but it may be worth noting: because we've written our rule as an "After examining…", anything that pre-empts the operation of the examine command will also prevent that rule from occurring. So for instance:
…would not result in the needle being mentioned.
Test me with "x chair / x computer / x ennui meter"
Here you are at the Control Center of the universe.
The Universe Management Computer sits directly before you, unguarded.
Because the computer is too large for you to reach all of the front panel from a standing position, there is a command chair on casters which allows you to push back and forth.
> x chair
Quite ordinary, really, but for the heady rush of power that comes of sitting in it.
The command chair includes some casters.
> x computer
The computer is so large that you would be unable to operate it all from one position. Alas, it does not come with a manual.
The Universe Management Computer includes a chartreuse indicator light, an ennui meter, a golden knob settable to 15,000 positions, a toothpick dispenser and a button labeled RESTART.
> x ennui meter
You can't be bothered.