Data hiding is a general concept in computing which demands that data that is important for state-keeping only is hidden from the user. In other words, the user 'sees' only the data necessary or relevant for him; everything else is hidden.
... is $44,583, and the median income for a family is $52,500. Males have a median income of $47,917 versus $31,250 for females. The per capita income for the town is $24,373. ...