So basically u can group a couple of blocks and save them for future levels. It also says C-(insert complexity amount) to show the complexity. 
#Custom blocks!
torn saffron
desert muskBOT
So basically u can group a couple of blocks and save them for future levels. It ...
Grouping blocks for future use - efficient. C-4 for complexity level indication. Good for planning.
torn saffron
tender bloom
torn saffron
Oh
fading pawn
just proves my point that nobody reads the roadmap