You are not looking at the latest version of the documentation. Check it out there.

What is BPMN?

BPMN stands for Business Process Model and Notation, it is a standard to design and document business processes in a graphical notation. You can find more details about the specification at

The basics of BPMN

BPMN uses a graphical notation to let the user designs and explains its business processes, the main four components are:

Graphical Notation Description
Activity Activities are displayed as round rounded-corner rectangle and represent what work has to be done. Tasks are a really good start point to understand how activities works.
Gateway Gateways are represented as diamond shape and used to split and merge the flow. You can find more details about the current implementation here.
Event Events are displayed as circles and used to trigger actions like starting a flow instance. Read the following sections get started with events:
- Start and Stop Events
- Timers Events
- Boundary Events
- Link Events
Sequence Flow BPMN objects are connected each others with a sequence flow which are designed by an arrow.

Advanced objects

After being familiar with the previous elements, you may want to take a look at the advanced objects

Graphical Notation Description
Sub-process Sub Processes are a specific type of activity that are used to make diagrams cleaner by encapsulating business process inside a business process. Take a look at the Sub Processes. page to know how to use it.
Pools and Lanes Pools and Lanes show who should perform a task and are represented as a rectangle, one pool can contains one to many lanes. See the sepcific Pool and Lanes page.