Professional Diagram Modeling

Turn user facts into a topology that processon-prompt can express precisely. Focus on relationships and runtime meaning, not decoration.

Select the diagram family

User intent	Family	Required model
Process, decisions, exceptions	Flowchart	start/end, actions, decisions, labeled outcomes
Cross-role process	Swimlane	lanes, owners, handoffs, decisions, exceptions
Ordered system interaction	Sequence diagram	participants, messages, returns, alternatives, failures
System composition or deployment	Architecture	boundaries, components, dependencies, protocols, data/control flows, trust zones
Data model	ER diagram	entities, key fields, PK/FK, cardinality, optionality
Software types and behavior	UML class/state/use-case/requirement	standard UML semantics for the requested view
Reporting hierarchy	Organization chart	roles, reporting lines, groups, vacant/shared roles
Ownership or control	Equity/relationship diagram	subjects, percentages or relation labels, direction
Milestones and evolution	Timeline	dates/phases, milestones, outcomes
Business analysis	SWOT, PEST, pyramid	named dimensions, concise evidence, priority