Bottom Exit Junction Collinear Top Entry
A bottom-exit junction fans to two targets in the row below and one sits directly beneath it, entered on its top. The single line drops collinearly down the trunk column into that horizontal-flow target: the inter-section approach lands on the trunk column and the in-section drop departs from the same column, so approach and drop meet as one straight stroke at the port boundary rather than parting onto a bundle-index fan lane (issue #1428 defect 2 / #1509).
Mermaid source
%%metro title: Bottom-exit junction collinear top-entry%%metro line: a | Line A | #e6007e%%metro grid: src | 1,0%%metro grid: first | 1,1%%metro grid: second | 2,1
graph LR subgraph src [Src] %%metro direction: TB %%metro exit: bottom | a s1[S1] s2[S2] s3[S3] s1 -->|a| s2 s2 -->|a| s3 end subgraph first [First] %%metro entry: top | a f1[F1] f2[F2] f1 -->|a| f2 end subgraph second [Second] %%metro entry: left | a g1[G1] g2[G2] g1 -->|a| g2 end s3 -->|a| f1 s3 -->|a| g1CLI command
nf-metro render examples/topologies/bottom_exit_junction_collinear_top_entry.mmd -o bottom_exit_junction_collinear_top_entry.svg