To clarify something by giving, or serving as, an example or a comparison.
To provide a book or other publication with pictures, diagrams or other explanatory or decorative features.
To point out; to discover; to direct to a knowledge of; to show; to make known.
To show or manifest by symptoms; to point to as the proper remedies.
To signal in a vehicle the desire to turn right or left.
To investigate the condition or power of, as of steam engine, by means of an indicator.