1.  Sometimes people have learning problems and they use visual means to help them understand.

2.  This visual means of communication is the most effective aid to a busy hotel manager who has to keep his or her finger on the pulse.

3.  From these and other disparate sources, they forged the visual means of communicating information about human dignity and the need to resist oppression.

4.  To give proponents a visual means of showing their support, she designed a simple logo, a black button, that can be added freely to Web pages.