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Thanks to Anar for these great colored 3D sketchs

  • Adobe Reader needs to be installed on the computer. (Adobe Official site)
  • Safari works automatically if Acrobat Reader is installed.
  • In Firefox since version 15, the Adobe Reader pluggin needs to be turned on in preferences/applications/Portable document formats.
  • Using Chrome browser. Go to Chrome’s address bar and type in: chrome://plugins/
  • Then disable “Chrome PDF Viewer” and enable “Adobe Acrobat”.

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