A human-readable text string containing additional information or comments about the intended target device or production condition. This key is required if the value of kCGPDFXOutputConditionIdentifier does not specify a standard production condition. It is optional otherwise. If present, the value of this key must be a CFString object.
Available in Mac OS X v10.4 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)