Edges

• identity
• shift
• affine
• gather / whole / dynamic / cross_partition

contemporaneous (solid)
lag (dashed; discharged or shift)
guarded (faded)

Boxes

• fill is a per-series hue (hash of series_id), not direction
• unbound remainder

Direction uses the Constants / Inputs / Internals / Outputs checkboxes. Layout is a clustered force layout (clusters are series, inputs pulled towards the top). Small graphs relayout when Cluster by or Vertical pull changes; larger graphs relayout the selected cluster with Relayout cluster. Large graphs open on a cluster overview: click a cluster or zoom in to see its statements. Click a node or edge to inspect sampled cells and canonical instance edges.