What is meant by a "Dependent Segment"? Explain with an example.

An account segment in which the available values depend on values entered in a previous segment, called the independent segment. For example, the dependent segment Sub-Account 0001 might mean Bank of Alaska when combined with the independent segment Account 1100, Cash, but the same Sub-Account 0001 might mean Building #3 when combined with Account 1700, Fixed Assets.