Line Style

The visual kind of the edge, shared across every diagram that draws edges so one vocabulary serves them all. Supported values: - `solid` — solid line, filled arrowhead (the default; a call) - `dotted` — dotted line, filled arrowhead (a reply, an optional path) - `open` — solid line, open arrowhead (asynchronous, fire-and-forget) - `thick` — heavy solid line (a critical path) Only needed for what the ontology cannot express: `open` and `thick` have no counterpart in RDF or OWL; a reply is derived from owl.inverseOf when that is declared, and this slot overrides it when not.