This property represents the name of the separation color
The name is an arbitrary value such as "Flame" which intended
for human readability.
It may also take the special values "All" or "None".
The former means all available colorants on an output device
while the latter means none of them.
As such the value "All" will typically output rich black and the
latter will output nothing.
For definitive details see:.
The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; page 157.