`interactive` - if set to `false`, interaction with elements and links is disabled. If it is a function, it will be called with the cell view in action and the name of the method it is evaluated in (`'pointerdown'`, `'pointermove'`, ...). If the returned value of such a function is `false` interaction will be disabled for the action. For links, there are special properties of the `interaction` object that are useful to disable the default behaviour. These properties are: `vertexAdd`, `vertexMove`, `vertexRemove` and `arrowheadMove`. By setting any of these properties to `false`, you can disable the related default action on links.