Adobe Acrobat 7 Professional - Manual (Page 597)

About embedding color profiles as output intents
An output intent provides a way to match the color characteristics of an Adobe PDF
document with those of a target output device or production environment in which the
document will be produced as a printed product. An output intent describes the color
reproduction characteristics of a possible output device or condition of production. The
color spaces in the document will be DeviceGray, DeviceRGB, or DeviceCMYK,
depending on the color model of the destination profile. This destination profile replaces
any existing output intent.