For information on CircularLayout and its properties, see the CircularLayout documentation page.
GoJS provides its own collection classes: List, Set, and Map. You can iterate over a collection by using an Iterator. More information can be found in the GoJS Intro.
This predefined layout is used for placing Nodes in a cirular or elliptical arrangement. More information can be found in the GoJS Intro.
GoJS Diagrams can be used alongside other HTML elements in a webapp. For custom Text Editors, Context Menus, and ToolTips, which are invoked and hidden via GoJS tool operations, it is best to use the HTMLInfo class.
More information can be found in the GoJS Intro.