title: which scaling factors are supported in UWP?
body: <p>According to this link <a href="https://msdn.microsoft.com/en-us/library/windows/apps/mt210779.aspx" rel="nofollow">https://msdn.microsoft.com/en-us/library/windows/apps/mt210779.aspx</a> : 
  "Windows 10 provides three user interface scaling factors: 1.0x, 1.4x, and 1.8x. Scaling values for each display are set during installation based on a number of combined factors: the size of the screen, the resolution of the screen, and the assumed average distance of the user from the screen"</p>
  
  <p>so why it doesn't support for scale-200? because in asset folder for tiles and logo it support these scale factoring. I mean if I use _scale-400 or ..., it supports it or not?</p>