| 摘要 |
A bed 20 has an indicator 80 associated therewith. The indicator has a first visually perceivable state and a second visually perceivable state differing from the first state in response to a change in a direction a of observation. Collectively, the states inform an observer of a feature or capability of the bed. The indicator may be in W the form of a label 82 associable with the bed and having the first and second visually perceivable states for collectively indicating the capability or feature of the bed. In general, the indicator is associated with an article to convey information about the article. |
