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”.