Some questions about shift paths component

Hi all,

I’m learning grasshopper recently, I pick up some finished grasshopper documents to analyze

I got stuck in understanding this shift paths component in this case

How does this component work in this case?

here is the GH file:
shift (43.3 KB)

You have 6 curves so, SCX returns 6 additional subbranches per each surface(162 faces * 6 curves = 972 branches).
So, the data tree structure after SCX is different from it’s upstream.
“Shift Paths” with offset -1 let you recover the data tree structure which is the same as the upstream’s “Graft”.

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thanks a lot, very clear explanation