AutoCAD is licensed, for free, to qualifying students and teachers, with a 18-month renewable license available. The student version of AutoCAD is functionally identical to the full commercial version, with one exception: DWG files created or edited by a student version have an internal bit-flag set (the "educational flag"). When such a DWG file is printed by any version of AutoCAD (commercial or student) older than AutoCAD 2014 SP1, the output includes a plot stamp / banner on all four sides. Objects created in the Student Version cannot be used for commercial use. Student Version objects "infect" a commercial version DWG file if it is imported in older versions than AutoCAD 2015.[21]The Autodesk Education Community provides registered students and faculty with free access to different Autodesk applications.PortsAndroidAutodesk AutoCAD 360 is the official AutoCAD mobile app for Android.[22]Microsoft WindowsAutoCAD is a software package created for Windows and usually any new AutoCAD version supports the current Windows version and some older ones. AutoCAD 2016 supports Windows 7 up to Windows 10.[23]Mac OSAutodesk stopped supporting Apple's Macintosh computers in 1994. Over the next several years, no compatible versions for the Mac were released. In 2010 Autodesk announced that it would once again support Apple's Mac OS X software in the future.[24] Most of the features found in the 2012 Windows version can be found in the 2012 Mac version. The main difference is the user interface and layout of the program. The interface is designed so that users who are already familiar with Apple's OS X software will find it similar to other Mac applications.[17] Autodesk has also built in various features in order to take full advantage of Apple's Trackpad capabilities as well as the full-screen mode in Apple's OS X Lion.[16][17] AutoCAD 2012 for Mac supports both the editing and saving of files in DWG formatting that will allow the file to be compatible with other platforms besides the OS X.[16] AutoCAD 2014 for Mac supports Apple Mac OS X v10.9.0 or later (Mavericks), OS X v10.8.0 or later (Mountain Lion) with 64-bit Intel processor.AutoCAD LT 2013 is now available through the Mac App Store for $899.99. The full featured version of AutoCAD 2013 for Mac, however, is not available through the Mac App Store due to the price limit of $999 set by Apple. AutoCAD 2014 for Mac is available for purchase from Autodesk's Web site for $4,195 and AutoCAD LT 2014 for Mac for $1,200, or from an Autodesk Authorized Reseller.[24]See also3ds MaxAutoCAD ArchitectureAutodeskAutodesk MayaAutodesk RevitAutoShadeAutoSketchComparison of computer-aided design editorsDesign Web FormatTekla StructuresSketchUp