Example PreserveAspectRatio - illustrates preserveAspectRatio attribute
SVG to fit
Viewport 1
Viewport 2
--------------- meet ---------------
xMin*
xMid*
xMax*
---------- meet ----------
*YMin
*YMid
*YMax
---------- slice ----------
xMin*
xMid*
xMax*
--------------- slice ---------------
*YMin
*YMid
*YMax