The biggest single item from the feature-adoption research. Every graph cell and named "value" cell below shares one CellGraph, so a graph cell's free variable can reference an earlier value cell by name -- add a value block named e.g. k, then a graph cell plotting k*sin(x) sources k live from that value cell instead of getting its own independent slider. v1 only supports referencing a named scalar this way, not another graph cell's entire curve/function. The whole document (every block, in order, with each graph cell's rows/viewport) lives in the URL, so reload restores it exactly, "Fork this view" opens the same document in a new tab to explore an alternate path independently, and "Save to gallery" adds it to the same shared gallery /multi saves to.