I think that's a combination of two features, named cells[1] and blocks[2]. [1] https://observablehq.com/documentation/cells/javascript#naming-referencing-cell

I think that's a combination of two features, named cells[1] and blocks[2]. [1] https://observablehq.com/documentation/cells/javascript#naming-referencing-cells https://observablehq.com/documentation/cells/javascript#nami... [2] https://observablehq.com/documentation/cells/javascript#expressions-variables-blocks https://observablehq.com/documentation/cells/javascript#expr...