Create or revise editable Mermaid source for version-controlled flowcharts, sequence diagrams, state diagrams, ER diagrams, class diagrams, and simple architecture diagrams. Use when a structural relationship, process, interaction, lifecycle, data model, or small component topology is clearer as a diagram than prose or a table. Do not use for whiteboard aesthetics, pixel-precise branded layouts, charts, or cases where text is clearer.
