General GNUStep future develoment question

[cm]

Hello all,

   Cocoa is based on an open standard named OPENSTEP,
and GNUStep has reimplemented this specification, this
is clearly legal. Are other framework or API's from
Apple also candidate for inclusion in GNUstep. For
instance is it legally possible to rewrite a Searchkit
or maybe CoreImage API for GNUstep ?

Generally my question is : are other API than Cocoa
legally clonable for gnustep, or are we tied to ever
only have cocoa compatibility.


   Thanks for any thoughts on this