http://www.macnn.com/articles/07/05/31/acrobat.3d.8.prc.specs/
Adobe shares Acrobat 3D 8 PRC specs
updated 12:20 pm EDT, Thu May 31, 2007
Acrobat 3D 8 PRC specs
Adobe has unveiled the specifications for the PRC file format supported by Acrobat 8. PRC is used to create 3D models that users can import into PDF documents using custom tools; it is also said to retain accuracy while producing dramtically smaller file sizes, by a factor of 100 to 300. The release of PRC's internal workings means that Mac developers can integrate the technology into upcoming CAD/AEC software. Adobe's own Acrobat 3D application is currently Windows-only, however.
