• Natural mapping. When appropriate, controls should be mapped out in the same pattern as
what they are controlling.
For example, in the Pacific Science Center there is an exhibit in which visitors attempt to identify the smell from bottles.
The smells are identified by flip labels that are laid out in the same pattern as the bottles.
It is clear which flip goes with which bottle simply by seeing the natural mapping.
• Navigation. It should be easy to navigate through instructions (or software programs).
• Instructions. Instructions must be simple and placed close to the things they are describing.