On a New-UDColumn, what is the actial difference between -SmallSize 12 -MediumSize 12 and -LargeSize 12?
Check out the section on Responsive Layouts here: http://archives.materializecss.com/0.100.2/grid.html
If you specify 12 for everything, it will be stretch the whole container size on all screen sizes.
If you use -LargeSize 6 and -SmallSize 12, for example, it will stretch half the screen on screens over 992px wide while it will stretch the whole screen on screens under 600px.
Oh of course. Thats very neat!