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. Rank layout is schedule residual. Clustered is a canvas-side clustered force (one hull per Cluster-by group); large dots views stay on rank. Click a node or edge to inspect sampled cells and canonical instance edges.