The following markup first defines an entity (mini-icon) as being associated with the contents of a graphics file (named mini.pm). Then the <graphic> element indicates the location of the graphic within a line of text.
<!entity mini-icon FILE "mini.pm"> . . . The <graphic entity=mini-icon> icon is used to represent very small images.
The following markup first defines a topic whose ID is mini-icon-topic. It then shows how to use the inline graphic as a hyperlink to this topic.
<s1 id=mini-icon-topic>When you click on the inline graphic, it will bring you to this topic. . . . The <link mini-icon-topic> <graphic entity=mini-icon> <\link> icon is to represent very small things.