1 A simple component class is a nonvisual component descended directly from TComponent.

2 The nonvisual user interfaces we develop can be used for applications other than for driving -- in everyday home appliances, in office settings, in educational settings.

3 Widgets can be both visual (in that they render visual content, such as a chart) or nonvisual (in that they provide some form of discrete function or access to a service).

4 The human mirror system functions effectively in people blind from birth, indicating that it is capable of interpreting nonvisual sensory information to acquire knowledge about others.

5 A visual component is a user interface element, such as a Control, and a nonvisual component is one without a user interface, such as one that creates a SQL Server? database connection.