d2/docs/diagrams/overview.d2

input: |d2
  hello -> world
|

input -> compiler.parse

compiler: {
  parse -> AST
  AST: Abstract Syntax Tree {
    shape: oval
  }

  AST -> compile
}

compiler.compile -> graph
graph: Graph\n(shapes & connections) {
  shape: oval
}

graph -> Set Dimensions
Set Dimensions -> Use ruler to measure all texts -> measured graph
Set Dimensions -> Use given, premeasured dimensions -> measured graph

measured graph: {
  shape: oval
}

measured graph -> layout engine -> positioned graph

positioned graph -> exporter -> diagram

diagram: finalized diagram (styled) {
  shape: oval
}

diagram -> render SVG

render SVG -> use sketch post processor: optional

use sketch post processor -> SVG bytes

SVG bytes: {
  shape: oval
}

SVG bytes -> screenshot for PNG: optional