Callout

In publishing, a call-out or callout is a short string of text connected by a line, arrow, or similar graphic to a feature of an illustration or technical drawing, and giving information about that feature. The term is also used to describe a short piece of text set in larger type than the rest of the page and intended to attract attention. A simi...
Found on http://en.wikipedia.org/wiki/Callout

callout

Text and a line that points to an area on a graphic image. For example: caption A label for a graphic image or a table.
Found on http://www.techscribe.co.uk/techw/glossary.htm
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