Why compare only to Windows  features   As this issue has clearly caused quite a bit of confusion Ive decided to address it here Windows XP is in the unique position  compared to all other Windows releases I can think of  of being at the convergence point of two separate Windows product lines that of Windows NT and the old MSDOSbased Windows x However the core code in XP is based on the former and not the latter hence XP has an internal version number of  while Windows  has one of   among numerous other things A list of every single feature included in Windows ME the last of the MSDOS based versions but not in XP would be quite long indeed and also quite pointless because it would be comparing operating systems of two very different architectures Theres also the fact that comparisons between the other List of features removed in Windows articles and this one would actually be made far more difficult