Chris, I find toggling between Main & Variant has me guessing to what, if anything has changed.
With both views open, I can see a change in one and it effect on the other.
As to what a Blocks Template may be.
Drag any Web Block ontp the toolbar part of the XDA.
Delete any Web Blocks and File >Save As to any name you like.
Even better, save it as a Template.
On re-use, it seems to remember what it was and will accept WB drops.
Whether is it just checking for Main 1280px and Variant 480px, I don't know.
Acorn
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