Bt Perp Entry Below
A BT section fed from below: a lower BT section's trailing TOP exit continues up the shared lane into an upper BT section's BOTTOM entry, a two-line bundle riding one column across the seam (#1044).
Mermaid source
%%metro title: BT Fed From Below%%metro style: dark%%metro line: a | A | #e63946%%metro line: b | B | #0570b0
%%metro grid: top_sec | 0,0%%metro grid: bot_sec | 0,1
graph LR subgraph top_sec [Upper] %%metro direction: BT %%metro entry: bottom | a,b t1[Refine] t2[Report] t1 -->|a,b| t2 end
subgraph bot_sec [Lower] %%metro direction: BT b1[Ingest] b2[Clean] b1 -->|a,b| b2 end
b2 -->|a,b| t1CLI command
nf-metro render examples/topologies/bt_perp_entry_below.mmd -o bt_perp_entry_below.svg