Diagramming Code Generates Mermaid diagrams from Trailmark's code graph. A pre-made script handles Mermaid syntax generation; Claude selects the diagram type and parameters. Trailmark 0.4.0 includes a native command; use it only after a version/command check, otherwise use this skill's bundled script. When to Use - Visualizing call paths between functions - Drawing class inheritance hierarchies - Mapping module import dependencies - Showing class structure with members - Highlighting complexity hotspots with color coding - Tracing data flow from entrypoints to sensitive functions When NOT to…