The timeline is used for visualizing specific events on yearly time basis. The controller name is "SimpleSwatTimeline" and can be added in panel with drag and drop.
The timeline can be horizontal or vertical. This customization can be set in the "Orientation" attribute, by mentioning "horizontal" or "vertical" as values.
For data, the "templateOptions" attribute is used and it's an object which specifies which fields from the business entity to be used in the timeline. You can specify the id, title, subtitle, date and description attributes.
Example:
{"id": "id", "title": "selfno", "subtitle": "selfno", "date": "datecreated", "description": "selfdesc"}