Arity One

Arity opens and you draw. No account, no manual, no setup screen. Pick a diagram type and sketch the way you would on paper. Each type already knows its own notation, so you never have to remember which shape means what or which arrow is allowed where. Arity handles that. You handle the thinking. FIVE DIAGRAM TYPES • Freestyle: a blank canvas, no rules. • Flow chart: Terminal, Process, Decision, I/O, Connector. Break a rule and it says so: only Decision and Connector may branch. • Class diagram: class, abstract, interface; fields and methods; association, aggregation, composition, inheritance, implementation, with multiplicities. Checked against OOP: missing abstract methods, inheritance cycles, interfaces used wrongly. • ER: both crow's foot and Chen, one button apart. • Mind map - official style: one central idea, organic tapering branches, one keyword each, colour inherited down the…