Question: CSR implementation

[imdaveho]

Hi there, I know this isn't an issue, but I was trying to read the source and it was difficult to understand how smart/fastCSR works. AFAICT, CSR changes the region based on the terminal rows, which means that scroll up and down should affect everything from col: 0 to col: term.width.

However, the test examples where a screen node was created as a parent to a box / scrollable box, we have a region that is getting scrolled but the surrounding area is not. I was hoping to be pointed to the area of code that implements this to know how this black magic sorcery is being done.

Thanks!