PDF Files and "Quartz Filters"

[Cartooniverse]

I just saved a regular PDF file that someone sent to me, onto my hard drive. It asks what the Quartz Filter level is.

What does this mean ?

Cartooniverse

[Szlater]

@Color Management with Mac OS X Tiger

These filters [quartz filters] let you apply color management, color effects, and other processing options such as compression or creation of files in PDF/X-3 format

@The Inside Wire.

The filter can make a variety of needed color adjustments that will change how the document looks when printed without modifying the document itself! You can also add visual effects and change the resolution of your document.

Brief how-to

[Cartooniverse]

Fascinating- who knew ???

Thank you !