Pictures may be added to the articles to illustrate important points or concepts.

He raised a bony finger to illustrate the concept of one.

The test is a series of pictures that illustrate various mechanical concepts and principles.

The external links below illustrate the concept in more detail.

We illustrate the concept by discussing some of these themes in detail.

The case is used in some modern law school contracts textbooks to illustrate the legal concept of good faith.

Works that illustrate the concept can be dated back to the Baroque period.

The following examples illustrate the concept of "earliest retirement age."

I mention this one simply to illustrate the concept.

In order to illustrate the concept we can consider an analogy in natural language, say English.