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Ransford's Notes

Build review-ready diagrams from Mermaid, D2, PlantUML, Python, or prompts. Move from workshops and flowcharts to architecture views and runbooks, then export for documents, decks, and delivery.

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Saved work

Saved projects for Diagram.

Diagram

Scratch is the default way to start. Use this page when you want to save diagram work into a project, open a saved project, or create a project before you continue.

Change studio

Studio

Diagram

Build flowcharts, sequence diagrams, ERDs, and org views.

Starting point

SaaS Billing ERD

Production-grade tenant, subscription, invoice, and payment relationships.

Project

Existing or new

Pick where this diagram view should live. The editor opens in the same route once you choose.

Starting point

Choose a template or start blank.

Templates load before the editor opens. If the job changes, you can still switch to blank, prompt, import, or Python inside the studio.

Blank startOrder-to-Cash WorkflowSaaS Billing ERDProduct Delivery Org ChartSubscription Lifecycle State MachineIncident Response EscalationProduct Analytics ERD

Selected start

SaaS Billing ERD

Production-grade tenant, subscription, invoice, and payment relationships.

Normalized billing schema ready for implementation and review.
TablesKeysRead/write ownership
Customer ID (PK) Name Email Phone Address Order ID (PK) CustID (FK) Date Total Status Product ID (PK) Name Price SKU Stock

Projects

Choose where this should live.

Open an existing project to review saved views, or create a new project if this work now needs durable history.