Anchorage:

Anchorage: The ‘pinning down’ of the meaning of an image by text.

This is particularly useful when talking about tabloid newspaper reports where a headline or caption is placed next to an image.

For example: when the footballer Eric Cantona rushed at someone in the stands with a Kun Fu style kick, the photograph appeared in the tabloids the next day with the headline “Shit Hits Fan”.  Clearly representing Cantona as the aggressor.