[rescue] OS X is certified UNIX

Patrick Giagnocavo patrick at zill.net
Thu Jun 14 14:46:05 CDT 2007

On Jun 14, 2007, at 3:16 PM, Micah R Ledbetter wrote:
> My understanding was that the Mac API was ported to the NeXT UI,
> rather than the other way 'round. NeXTSTEP used postscript; Aqua uses
> PDF. (I figured this change was due to expensive licensing for
> postscript.)

PDF is basically PS under the covers, cleaned up and simplified.  For  
instance, PS has an operator that allows access to the file system,  
PDF does not.

Patrick Giagnocavo
patrick at zill.net

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